/*====================================================================*
*
*   Copyright (c) 2013 Qualcomm Atheros, Inc.
*
*   All rights reserved.
*
*====================================================================*/

/*====================================================================*
 *
 *   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 lightning_nvm_header 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 uint32_t origin = ~ 0; 
	static uint32_t offset = 0; 
	struct panther_nvm_header 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))) 
	{ 
		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); 
}