text: /*====================================================================*
   *
   *   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 SDRAMInfo (struct plc * plc);
   *
   *   plc.h
   *
   *   read the flash resident NVM header and SDRAM configuration block
   *   with VS_RD_CBLOCK;
   *
   *
   *   Contributor(s):
   *      Charles Maier <cmaier@qca.qualcomm.com>
   *
   *--------------------------------------------------------------------*/
  
  #ifndef SDRAMINFO_SOURCE
  #define SDRAMINFO_SOURCE
  
  #include <stdint.h>
  #include <memory.h>
  
  #include "../plc/plc.h"
  #include "../tools/error.h"
  #include "../tools/memory.h"
  #include "../ram/sdram.h"
  #include "../nvm/nvm.h"
  
  signed SDRAMInfo (struct plc * plc)
  
  {
  	struct channel * channel = (struct channel *)(plc->channel);
  	struct message * message = (struct message *)(plc->message);
  
  #ifndef __GNUC__
  #pragma pack (push,1)
  #endif
  
  	struct __packed vs_rd_cblock_request
  	{
  		struct ethernet_hdr ethernet;
  		struct qualcomm_hdr qualcomm;
  	}
  	* request = (struct vs_rd_cblock_request *) (message);
  	struct __packed vs_rd_cblock_confirm
  	{
  		struct ethernet_hdr ethernet;
  		struct qualcomm_hdr qualcomm;
  		uint8_t MSTATUS;
  		uint8_t CONFIGLENGTH;
  		struct nvm_header1 nvm_header;
  		struct config_ram config_ram;
  	}
  	* confirm = (struct vs_rd_cblock_confirm *) (message);
  
  #ifndef __GNUC__
  #pragma pack (pop)
  #endif
  
  	struct config_ram * config_ram = (struct config_ram *)(&confirm->config_ram);
  	Request (plc, "Fetch SDRAM Parameters");
  	memset (message, 0, sizeof (* message));
  	EthernetHeader (&request->ethernet, channel->peer, channel->host, channel->type);
  	QualcommHeader (&request->qualcomm, 0, (VS_RD_CBLOCK | MMTYPE_REQ));
  	plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
  	if (SendMME (plc) <= 0)
  	{
  		error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
  		return (-1);
  	}
  	while (ReadMME (plc, 0, (VS_RD_CBLOCK | MMTYPE_CNF)) > 0)
  	{
  		if (confirm->MSTATUS)
  		{
  			Failure (plc, PLC_WONTDOIT);
  			continue;
  		}
  		Confirm (plc, "-------");
  		sdrampeek (config_ram);
  	}
  	return (0);
  }
  
  
  #endif
  
  