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

    /*====================================================================*"
     *
     *   nvmmerge.c -
     *
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *      Nathaniel Houghton <nhoughto@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *   system header files;
     *--------------------------------------------------------------------*/

    #include <stdio.h>
    #include <unistd.h>
    #include <string.h>
    #include <errno.h>

    /*====================================================================*
     *   custom header files;
     *--------------------------------------------------------------------*/

    #include "../tools/getoptv.h"
    #include "../tools/memory.h"
    #include "../tools/flags.h"
    #include "../tools/files.h"
    #include "../tools/error.h"
    #include "../nvm/nvm.h"

    /*====================================================================*
     *   custom source files;
     *--------------------------------------------------------------------*/

    #ifndef MAKEFILE
    #include "../tools/getoptv.c"
    #include "../tools/putoptv.c"
    #include "../tools/version.c"
    #include "../tools/checksum32.c"
    #include "../tools/error.c"
    #endif

    /*====================================================================*
     *
     *   void copyimage (struct _file_ * file, signed extent, signed image)
     *
     *
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    static void copyimage (struct _file_ * file, signed extent, signed image)

    {
    	char buffer [1024];
    	signed length = sizeof (buffer);
    	while (extent)
    	{
    		if (length > extent)
    		{
    			length = extent;
    		}
    		if (read (file->file, buffer, length) < length)
    		{
    			error (1, errno, NVM_IMG_CANTREAD, file->name, image);
    		}
    		if (write (STDOUT_FILENO, buffer, length) < length)
    		{
    			error (1, errno, NVM_IMG_CANTSAVE, file->name, image);
    		}
    		extent -= length;
    	}
    	return;
    }

    /*====================================================================*
     *
     *   void function1 (char const * filename, signed index, flag_t flags);
     *
     *   concatenate Atheros image files having the older header format;
     *
     *   the major and minor header version must be 0x6000 and 0x0000
     *   and both header links must be 0x00000000;
     *
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    static void function1 (struct _file_ * file, signed index, flag_t flags)

    {
    	static signed image = 0;
    	static uint32_t offset = 0;
    	struct nvm_header1 nvm_header;
    	if (read (file->file, &nvm_header, sizeof (nvm_header)) != sizeof (nvm_header))
    	{
    		error (1, errno, NVM_HDR_CANTREAD, file->name, image);
    	}
    	if (LE32TOH (nvm_header.HEADERVERSION) != 0x60000000)
    	{
    		error (1, 0, NVM_HDR_VERSION, file->name, image);
    	}
    	if (checksum32 (&nvm_header, sizeof (nvm_header), 0))
    	{
    		error (1, 0, NVM_HDR_CHECKSUM, file->name, image);
    	}
    	if (nvm_header.NEXTHEADER)
    	{
    		error (1, 0, NVM_HDR_LINK, file->name, image);
    	}
    	if (index)
    	{
    		offset += sizeof (nvm_header);
    		offset += LE32TOH (nvm_header.IMAGELENGTH);
    		nvm_header.NEXTHEADER = HTOLE32 (offset);
    	}
    	nvm_header.HEADERCHECKSUM = 0;
    	nvm_header.HEADERCHECKSUM = checksum32 (&nvm_header, sizeof (nvm_header), 0);
    	if (write (STDOUT_FILENO, &nvm_header, sizeof (nvm_header)) != sizeof (nvm_header))
    	{
    		error (1, errno, NVM_HDR_CANTSAVE, file->name, image);
    	}
    	copyimage (file, LE32TOH (nvm_header.IMAGELENGTH), image);
    	return;
    }

    /*====================================================================*
     *
     *   void function2 (char const * filename, signed index, flag_t flags);
     *
     *   concatenate Atheros image files having the newer header format;
     *
     *   the manor and minor header version must be 0x0001 and 0x0001
     *   and both header links must be 0xFFFFFFFF;
     *
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    static void function2 (struct _file_ * file, signed index, flag_t flags)

    {
    	static signed image = 0;
    	static signed origin = ~0;
    	static signed offset = 0;
    	struct nvm_header2 nvm_header;
    	if (read (file->file, &nvm_header, sizeof (nvm_header)) != sizeof (nvm_header))
    	{
    		error (1, errno, NVM_HDR_CANTREAD, file->name, image);
    	}
    	if (LE16TOH (nvm_header.MajorVersion) != 1)
    	{
    		error (1, 0, NVM_HDR_VERSION, file->name, image);
    	}
    	if (LE16TOH (nvm_header.MinorVersion) != 1)
    	{
    		error (1, 0, NVM_HDR_VERSION, file->name, image);
    	}
    	if (checksum32 (&nvm_header, sizeof (nvm_header), 0))
    	{
    		error (1, 0, NVM_HDR_CHECKSUM, file->name, image);
    	}
    	if (~nvm_header.PrevHeader)
    	{
    		error (1, 0, NVM_HDR_LINK, file->name, image);
    	}
    	if (~nvm_header.NextHeader)
    	{
    		error (1, 0, NVM_HDR_LINK, file->name, image);
    	}
    	nvm_header.PrevHeader = HTOLE32 (origin);
    	origin = offset;
    	if (index)
    	{
    		offset += sizeof (nvm_header);
    		offset += LE32TOH (nvm_header.ImageLength);
    		nvm_header.NextHeader = HTOLE32 (offset);
    	}
    	nvm_header.HeaderChecksum = 0;
    	nvm_header.HeaderChecksum = checksum32 (&nvm_header, sizeof (nvm_header), 0);
    	if (write (STDOUT_FILENO, &nvm_header, sizeof (nvm_header)) != sizeof (nvm_header))
    	{
    		error (1, errno, NVM_HDR_CANTSAVE, file->name, image);
    	}
    	copyimage (file, LE32TOH (nvm_header.ImageLength), image);
    	image++;
    	return;
    }

    /*====================================================================*
     *
     *   void function (char const * filename, signed count, flag_t flags);
     *
     *
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    static void function (char const * filename, signed index, flag_t flags)

    {
    	uint32_t version;
    	struct _file_ file =
    	{
    		-1,
    		filename
    	};
    	if (_anyset (flags, NVM_VERBOSE))
    	{
    		error (0, 0, "%s", file.name);
    	}
    	if ((file.file = open (file.name, O_BINARY|O_RDONLY)) == -1)
    	{
    		error (1, errno, FILE_CANTOPEN, 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)
    	{
    		function1 (&file, index, flags);
    	}
    	else
    	{
    		function2 (&file, index, flags);
    	}
    	close (file.file);
    	return;
    }

    /*====================================================================*
     *
     *   int main (int argc, char const * argv []);
     *
     *
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    int main (int argc, char const * argv [])

    {
    	static char const * optv [] =
    	{
    		"qv",
    		"file [file] [...] [> file]",
    		"Qualcomm Atheros PLC Firmware Image File Splicer",
    		"q\tsuppress messages",
    		"v\tverbose messages",
    		(char const *) (0)
    	};
    	flag_t flags = (flag_t)(0);
    	signed c;
    	optind = 1;
    	while ((c = getoptv (argc, argv, optv)) != -1)
    	{
    		switch ((char) (c))
    		{
    		case 'q':
    			_setbits (flags, NVM_SILENCE);
    			break;
    		case 'v':
    			_setbits (flags, NVM_VERBOSE);
    			break;
    		default:
    			break;
    		}
    	}
    	argc -= optind;
    	argv += optind;

    #ifdef WIN32

    	setmode (fileno (stdin), O_BINARY);
    	setmode (fileno (stdout), O_BINARY);

    #endif

    	while ((argc) && (* argv))
    	{
    		function (* argv, argc-1, flags);
    		argv++;
    		argc--;
    	}
    	return (0);
    }

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