/*====================================================================*
*
* 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 "AS IS" 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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* signed nvmfile (struct _file_ const * file);
*
* nvm.h
*
* open an NVM file and validate it by walking the header and image
* chain and validating all checksums; rewind valid files; return a
* file descriptor on success or terminate the program on error;
*
* the checksum of the entire header, including header checksum, is
* always 0 for valid headers; similarly, the checksum of the image
* and image checksum is always 0 for valid images;
*
*
* Contributor(s):
* Charles Maier <cmaier@qca.qualcomm.com>
*
*--------------------------------------------------------------------*/
#ifndef NVMFILE_SOURCE
#define NVMFILE_SOURCE
#include "../tools/endian.h"
#include "../tools/files.h"
#include "../tools/error.h"
#include "../nvm/nvm.h"
signed nvmfile (struct _file_ const * file)
{
uint32_t version;
if (lseek (file->file, 0, SEEK_SET))
{
error (1, errno, FILE_CANTHOME, file->name);
}
if (read (file->file, &version, sizeof (version)) != sizeof (version))
{
error (1, errno, FILE_CANTREAD, file->name);
}
if (lseek (file->file, 0, SEEK_SET))
{
error (1, errno, FILE_CANTHOME, file->name);
}
if (LE32TOH (version) == 0x60000000)
{
return (nvmfile1 (file));
}
return (nvmfile2 (file));
}
#endif