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

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

/*====================================================================*
 *
 *   signed WriteCFG (struct plc * plc);
 *
 *   plc.h
 *
 *   This plugin for program plc writes the contents of an SDRAM
 *   confirmation file to a device using a VS_SET_SDRAM message; the
 *   CFG file in struct plc must be opened before this function is
 *   called; the bootloader must be running for this to work;
 *
 *   the VS_SET_SDRAM message is recognized by the INT600 BootLoader
 *   only; the INT6400 BootLoader recognizes it but does nothing with
 *   it;
 *
 *   Contributor(s):
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

#ifndef WRITECFG_SOURCE
#define WRITECFG_SOURCE

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

#include "../plc/plc.h"
#include "../tools/memory.h"
#include "../tools/error.h"
#include "../tools/files.h"
#include "../ram/sdram.h"

int WriteCFG (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_set_sdram_request
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		struct config_ram config_ram;
		uint32_t CHECKSUM;
	}
	* request = (struct vs_set_sdram_request *) (message);
	struct __packed vs_set_sdram_confirm
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MSTATUS;
	}
	* confirm = (struct vs_set_sdram_confirm *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	Request (plc, "Write Configuration Applet from %s", plc->CFG.name);
	memset (message, 0, sizeof (* message));
	EthernetHeader (& request->ethernet, channel->peer, channel->host, channel->type);
	QualcommHeader (& request->qualcomm, 0, (VS_SET_SDRAM | MMTYPE_REQ));
	plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
	if (lseek (plc->CFG.file, 0, SEEK_SET))
	{
		error (PLC_EXIT (plc), errno, FILE_CANTHOME, plc->CFG.name);
		return (-1);
	}
	if (read (plc->CFG.file, & request->config_ram, sizeof (struct config_ram)) != sizeof (struct config_ram))
	{
		error (PLC_EXIT (plc), errno, FILE_CANTREAD, plc->CFG.name);
		return (-1);
	}
	if (read (plc->CFG.file, & request->CHECKSUM, sizeof (request->CHECKSUM)) != sizeof (request->CHECKSUM))
	{
		error (PLC_EXIT (plc), errno, "can't read %s checksum", plc->CFG.name);
		return (-1);
	}
	if (SendMME (plc) <= 0)
	{
		error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
		return (-1);
	}
	if (ReadMME (plc, 0, (VS_SET_SDRAM | MMTYPE_CNF)) <= 0)
	{
		error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
		return (-1);
	}
	if (confirm->MSTATUS)
	{
		Failure (plc, PLC_WONTDOIT);
		return (-1);
	}
	Confirm (plc, "Written");
	return (0);
}

#endif