sdramfileA.c
Author: cmaier@cmassoc.net

    /*====================================================================*
     *
     *   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.
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *
     *   int sdramfileA (int fd, char const * filename, flag_t flags);
     *
     *   sdram.h
     *
     *   open an SDRAM configuration file and validate it by checking the
     *   file length; unfortunately there are not many things to check;
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    #ifndef SDRAMFILEA_SOURCE
    #define SDRAMFILEA_SOURCE

    #include <unistd.h>
    #include <memory.h>
    #include <fcntl.h>
    #include <errno.h>

    #include "../ram/sdram.h"
    #include "../tools/memory.h"
    #include "../tools/error.h"
    #include "../tools/flags.h"

    int sdramfileA (int fd, char const * filename, flag_t flags)

    {
    	uint32_t checksum;
    	struct config_ram config_ram;
    	memset (&config_ram, 0, sizeof (config_ram));
    	if (lseek (fd, 0, SEEK_SET) == -1)
    	{
    		if (_allclr (flags, SDRAM_SILENCE))
    		{
    			error (0, errno, "Can't rewind file: %s", filename);
    		}
    		return (-1);
    	}
    	if (read (fd, &config_ram, sizeof (config_ram)) != sizeof (config_ram))
    	{
    		if (_allclr (flags, SDRAM_SILENCE))
    		{
    			error (0, errno, "Wrong file size: %s", filename);
    		}
    		return (-1);
    	}
    	if (read (fd, &checksum, sizeof (checksum)) != sizeof (checksum))
    	{
    		if (_allclr (flags, SDRAM_SILENCE))
    		{
    			error (0, errno, "Can't read checksum: %s", filename);
    		}
    		return (-1);
    	}
    	if (checksum32 ((uint32_t *)(&config_ram), sizeof (config_ram) >> 2, checksum))
    	{
    		if (_allclr (flags, SDRAM_SILENCE))
    		{
    			error (0, 0, "Bad checksum: %s", filename);
    		}
    		return (-1);
    	}
    	if (_anyset (flags, SDRAM_VERBOSE))
    	{
    		if ((filename) && (*filename))
    		{
    			printf ("------- %s -------\n", filename);
    		}
    		sdrampeek (&config_ram);
    	}
    	if (lseek (fd, 0, SEEK_SET) == -1)
    	{
    		if (_allclr (flags, SDRAM_SILENCE))
    		{
    			error (0, errno, "Can't rewind file: %s", filename);
    		}
    		return (-1);
    	}
    	return (0);
    }

    #endif

[PREV] [HOME] [NEXT]