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			piboffset.c
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/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or 
 *   without modification, are permitted (subject to the limitations 
 *   in the disclaimer below) provided that the following conditions 
 *   are met:
 *
 *   * Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
 *
 *   * Neither the name of Qualcomm Atheros nor the names of 
 *     its contributors may be used to endorse or promote products 
 *     derived from this software without specific prior written 
 *     permission.
 *
 *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE 
 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE 
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot; AND ANY EXPRESS OR 
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
 *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
 *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 *   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 *   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   uint32_t piboffset (struct _file_ * file)
 *
 *   The PIB is written to different SDRAM locations depending on
 *   the chipset used; we use the PIN major/minor version here to
 *   determine where to write the PIB but probably should switch
 *   to using the hardware platform code derived from the
 *   VS_SW_VER message;
 *
 *--------------------------------------------------------------------*/

#include &lt;stdlib.h&gt;

#include &quot;../plc/plc.h&quot;
#include &quot;../pib/pib.h&quot;

uint32_t piboffset (struct _file_ * file)

{
	struct pib_header pib_header;
	uint32_t offset = 0;
	if (lseek (file-&gt;file, 0, SEEK_SET))
	{
		error (1, errno, FILE_CANTHOME, file-&gt;name);
	}
	if (read (file-&gt;file, &amp;pib_header, sizeof (pib_header)) &lt; sizeof (pib_header))
	{
		error (1, errno, FILE_CANTREAD, file-&gt;name);
	}
	if (lseek (file-&gt;file, 0, SEEK_SET))
	{
		error (1, errno, FILE_CANTHOME, file-&gt;name);
	}
	if (BE16TOH (*(uint16_t *)(&amp;pib_header)) &lt; 0x0305)
	{
		offset = LEGACY_PIBOFFSET;
	}
	else if (BE16TOH (*(uint16_t *)(&amp;pib_header)) &lt; 0x0500)
	{
		offset = INT6x00_PIBOFFSET;
	}
	else
	{
		offset = AR7x00_PIBOFFSET;
	}
	return (offset);
}


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