csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/plc/WriteExecuteFirmware1.c

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

/*====================================================================*
 *
 *   signed WriteExecuteFirmware1 (struct plc * plc, unsigned module, const struct lightning_nvm_header * nvm_header);
 *
 *   plc.h
 *
 *   write firmware image into SDRAM and start execution using the
 *   VS_WRITE_AND_EXECUTE_APPLET message when the image is legacy
 *   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 <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

#ifndef WRITEEXECUTEFIRMWARE1_SOURCE
#define WRITEEXECUTEFIRMWARE1_SOURCE

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

signed WriteExecuteFirmware1 (struct plc * plc, unsigned module, const struct lightning_nvm_header * 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);
		}
		if (ReadMME (plc, 0, (VS_WRITE_AND_EXECUTE_APPLET | MMTYPE_CNF)) <= 0)
		{
			error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
			return (-1);
		}
		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