The binary firmware may be downloaded from
http://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git

Copyright (c) 2007-2010 Broadcom Corporation

This file contains firmware data derived from proprietary unpublished
source code, Copyright (c) 2007-2009 Broadcom Corporation.

Permission is hereby granted for the distribution of this firmware data
in hexadecimal or equivalent format, provided this copyright notice is
accompanying it.