csu3_am335x/EVSE/GPL/open-plc-utils-0.3/plc/WriteExecuteFirmware2.c

/*====================================================================*
 *
 *   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
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 *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 *   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.
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 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   signed WriteExecuteFirmware2 (struct plc * plc, unsigned module, const struct nvm_header2 * nvm_header);
 *
 *   plc.h
 *
 *   use VS_WRITE_AND_EXECUTE_APPLET write a firmware image into SDRAM and
 *   start execution when the image is stored in the new image file
 *   format;
 *
 *   the boot loader must be running for this to work since runtime
 *   firmware ignores VS_WRITE_AND_EXECUTE_APPLET messages;
 *
 *
 *   Contributor(s):
 *      Charles Maier
 *
 *--------------------------------------------------------------------*/

#ifndef WRITEEXECUTEFIRMWARE2_SOURCE
#define WRITEEXECUTEFIRMWARE2_SOURCE

#include "../tools/files.h"
#include "../tools/error.h"
#include "../plc/plc.h"

signed WriteExecuteFirmware2 (struct plc * plc, unsigned module, const struct nvm_header2 * nvm_header)

{
	struct channel * channel = (struct channel *)(plc->channel);
	struct message * message = (struct message *)(plc->message);

#ifndef __GNUC__
#pragma pack (push,1)
#endif

	struct __packed vs_write_execute_request
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint32_t CLIENT_SESSION_ID;
		uint32_t SERVER_SESSION_ID;
		uint32_t FLAGS;
		uint8_t ALLOWED_MEM_TYPES [8];
		uint32_t TOTAL_LENGTH;
		uint32_t CURR_PART_LENGTH;
		uint32_t CURR_PART_OFFSET;
		uint32_t START_ADDR;
		uint32_t CHECKSUM;
		uint8_t RESERVED2 [8];
		uint8_t IMAGE [PLC_MODULE_SIZE];
	}
	* request = (struct vs_write_execute_request *) (message);
	struct __packed vs_write_execute_confirm
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint32_t MSTATUS;
		uint32_t CLIENT_SESSION_ID;
		uint32_t SERVER_SESSION_ID;
		uint32_t FLAGS;
		uint8_t ALLOWED_MEM_TYPES [8];
		uint32_t TOTAL_LENGTH;
		uint32_t CURR_PART_LENGTH;
		uint32_t CURR_PART_OFFSET;
		uint32_t START_ADDR;
		uint32_t CHECKSUM;
		uint8_t RESERVED2 [8];
		uint32_t CURR_PART_ABSOLUTE_ADDR;
		uint32_t ABSOLUTE_START_ADDR;
	}
	* confirm = (struct vs_write_execute_confirm *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	unsigned action = PLC_MODULE_ABSOLUTE;
	uint32_t length = PLC_MODULE_SIZE;
	uint32_t offset = LE32TOH (nvm_header->ImageAddress);
	uint32_t extent = LE32TOH (nvm_header->ImageLength);
	Request (plc, "Write %s (%d) (%08X:%d)", plc->NVM.name, module, offset, extent);
	while (extent)
	{
		memset (message, 0, sizeof (* message));
		EthernetHeader (&request->ethernet, channel->peer, channel->host, channel->type);
		QualcommHeader (&request->qualcomm, 0, (VS_WRITE_AND_EXECUTE_APPLET | MMTYPE_REQ));
		if (length > extent)
		{
			if (!(LE32TOH(nvm_header->EntryPoint) % sizeof(nvm_header->EntryPoint)))
			{
				Request (plc, "Start %s (%d) (%08X)", plc->NVM.name, module, LE32TOH (nvm_header->EntryPoint));
				action |= PLC_MODULE_EXECUTE;
			}
			length = extent;
		}
		if (read (plc->NVM.file, request->IMAGE, length) != (signed)(length))
		{
			error (1, errno, FILE_CANTREAD, plc->NVM.name);
		}
		request->CLIENT_SESSION_ID = HTOLE32 (plc->cookie);
		request->SERVER_SESSION_ID = HTOLE32 (0);
		request->FLAGS = HTOLE32 (action);
		request->ALLOWED_MEM_TYPES [0] = 1;
		request->TOTAL_LENGTH = nvm_header->ImageLength;
		request->CURR_PART_LENGTH = HTOLE32 (length);
		request->CURR_PART_OFFSET = HTOLE32 (offset);
		request->START_ADDR = nvm_header->EntryPoint;
		request->CHECKSUM = nvm_header->ImageChecksum;
		plc->packetsize = sizeof (* request);
		if (SendMME (plc) <= 0)
		{
			error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
			return (-1);
		}
		do {
			if (ReadMME (plc, 0, (VS_WRITE_AND_EXECUTE_APPLET | MMTYPE_CNF)) <= 0)
			{
				error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
				return (-1);
			}
		} while (confirm->CLIENT_SESSION_ID != HTOLE32 (plc->cookie));
		if (confirm->MSTATUS)
		{
			Failure (plc, PLC_WONTDOIT);
			return (-1);
		}
		if (LE32TOH (confirm->CURR_PART_LENGTH) != length)
		{
			error (PLC_EXIT (plc), 0, PLC_ERR_LENGTH);
			return (-1);
		}
		if (LE32TOH (confirm->CURR_PART_OFFSET) != offset)
		{
			error (PLC_EXIT (plc), 0, PLC_ERR_OFFSET);
			return (-1);
		}
		offset += length;
		extent -= length;
	}
	return (0);
}


#endif