csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/plc/InitDevice2.c

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

/*====================================================================*
 *
 *   int InitDevice2 (struct plc * plc);
 *
 *   plc.h
 *
 *   configure volatile memory by finding the memctl applet in a
 *   newer .nvm file then downloading it and executing it;
 *
 *   this implementation detects chipsets prior to INT6400 and uses
 *   VS_WR_MEM/VS_ST_MAC messages instead of VS_WRITE_AND_EXECUTE
 *   messages;
 *
 *   Contributor(s):
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

#ifndef INITDEVICE2_SOURCE
#define INITDEVICE2_SOURCE

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

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

int InitDevice2 (struct plc * plc)

{
	unsigned module = 0;
	struct panther_nvm_header nvm_header;
	if (lseek (plc->NVM.file, 0, SEEK_SET))
	{
		error (1, errno, FILE_CANTHOME, plc->NVM.name);
	}
	do 
	{
		if (read (plc->NVM.file, & nvm_header, sizeof (nvm_header)) != sizeof (nvm_header))
		{
			error (1, errno, NVM_HDR_CANTREAD, plc->NVM.name, module);
		}
		if (LE16TOH (nvm_header.MajorVersion) != 1)
		{
			error (1, 0, NVM_HDR_VERSION, plc->NVM.name, module);
		}
		if (LE16TOH (nvm_header.MinorVersion) != 1)
		{
			error (1, 0, NVM_HDR_VERSION, plc->NVM.name, module);
		}
		if (checksum32 (& nvm_header, sizeof (nvm_header), 0))
		{
			error (1, 0, NVM_HDR_CHECKSUM, plc->NVM.name, module);
		}

#if 0

		if (_allclr (LE16TOH (nvm_header.ExecuteMask), (1 << (plc->hardwareID -1))))
		{
			if (lseek (plc->NVM.file, LE32TOH (nvm_header.NextHeader), SEEK_SET) == -1)
			{
				error (1, errno, "Can't skip module: %s (%d)", plc->NVM.name, module);
			}
		}
		else

#endif

		if (LE32TOH (nvm_header.ImageType) == NVM_IMAGE_MEMCTL)
		{
			if (WriteExecuteFirmware2 (plc, module, & nvm_header))
			{
				return (-1);
			}
			break;
		}
		if (lseek (plc->NVM.file, LE32TOH (nvm_header.NextHeader), SEEK_SET) == -1)
		{
			error (1, errno, "Can't skip module: %s (%d)", plc->NVM.name, module);
		}
		module++;
	}
	while (~ nvm_header.NextHeader);
	return (0);
}

#endif