Identity2.c
Author: cmaier@cmassoc.net

    /*====================================================================*
     *
     *   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.
     *
     *--------------------------------------------------------------------*/

    #ifndef IDENTITY2_SOURCE
    #define IDENTITY2_SOURCE

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

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

    /*====================================================================*
     *
     *   signed pibchain2 (void const * memory);
     *
     *   search panther/lynx image chain for the next PIB image; print
     *   information on stdout and return;
     *
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    static signed pibchain2 (void const * memory, char const * filename, flag_t flags)

    {
    	struct nvm_header2 * nvm_header;
    	uint32_t origin = ~0;
    	uint32_t offset = 0;
    	signed module = 0;
    	do
    	{
    		nvm_header = (struct nvm_header2 *)((char *)(memory) + offset);
    		if (LE16TOH (nvm_header->MajorVersion) != 1)
    		{
    			if (_allclr (flags, NVM_SILENCE))
    			{
    				error (0, errno, NVM_HDR_VERSION, filename, module);
    			}
    			return (-1);
    		}
    		if (LE16TOH (nvm_header->MinorVersion) != 1)
    		{
    			if (_allclr (flags, NVM_SILENCE))
    			{
    				error (0, errno, NVM_HDR_VERSION, filename, module);
    			}
    			return (-1);
    		}
    		if (LE32TOH (nvm_header->PrevHeader) != origin)
    		{
    			if (_allclr (flags, NVM_SILENCE))
    			{
    				error (0, errno, NVM_HDR_LINK, filename, module);
    			}
    			return (-1);
    		}
    		if (checksum32 (nvm_header, sizeof (* nvm_header), 0))
    		{
    			error (0, 0, NVM_HDR_CHECKSUM, filename, module);
    			return (-1);
    		}
    		origin = offset;
    		offset += sizeof (* nvm_header);
    		if (LE32TOH (nvm_header->ImageType) == NVM_IMAGE_PIB)
    		{
    			struct pib_header * pib_header = (struct pib_header *)((char *)(memory) + offset);
    			pib_header->PIBLENGTH = HTOLE16((uint16_t)(LE32TOH(nvm_header->ImageLength)));
    			pibpeek2 ((char *)(memory) + offset);
    			pib_header->PIBLENGTH = 0;
    			break;
    		}
    		if (checksum32 ((char *)(memory) + offset, LE32TOH (nvm_header->ImageLength), nvm_header->ImageChecksum))
    		{
    			if (_allclr (flags, NVM_SILENCE))
    			{
    				error (0, errno, NVM_IMG_CHECKSUM, filename, module);
    			}
    			return (-1);
    		}
    		offset += LE32TOH (nvm_header->ImageLength);
    		module++;
    	}
    	while (~nvm_header->NextHeader);
    	return (0);
    }

    /*====================================================================*
     *
     *   signed Identity2 (struct plc * plc);
     *
     *   plc.h
     *
     *   read start of parameter chain from flash memory using single
     *   VS_MODULE_OPERATION message and print identity information on
     *   stdout;
     *
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    signed Identity2 (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_module_operation_read_request
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint32_t RESERVED;
    		uint8_t NUM_OP_DATA;
    		struct __packed
    		{
    			uint16_t MOD_OP;
    			uint16_t MOD_OP_DATA_LEN;
    			uint32_t MOD_OP_RSVD;
    			uint16_t MODULE_ID;
    			uint16_t MODULE_SUB_ID;
    			uint16_t MODULE_LENGTH;
    			uint32_t MODULE_OFFSET;
    		}
    		MODULE_SPEC;
    	}
    	* request = (struct vs_module_operation_read_request *)(message);
    	struct __packed vs_module_operation_read_confirm
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint16_t MSTATUS;
    		uint16_t ERR_REC_CODE;
    		uint32_t RESERVED;
    		uint8_t NUM_OP_DATA;
    		struct __packed
    		{
    			uint16_t MOD_OP;
    			uint16_t MOD_OP_DATA_LEN;
    			uint32_t MOD_OP_RSVD;
    			uint16_t MODULE_ID;
    			uint16_t MODULE_SUB_ID;
    			uint16_t MODULE_LENGTH;
    			uint32_t MODULE_OFFSET;
    		}
    		MODULE_SPEC;
    		uint8_t MODULE_DATA [PLC_MODULE_SIZE];
    	}
    	* confirm = (struct vs_module_operation_read_confirm *)(message);

    #ifndef __GNUC__
    #pragma pack (pop)
    #endif

    	memset (message, 0, sizeof (* message));
    	EthernetHeader (&request->ethernet, channel->peer, channel->host, channel->type);
    	QualcommHeader (&request->qualcomm, 0, (VS_MODULE_OPERATION | MMTYPE_REQ));
    	plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
    	request->NUM_OP_DATA = 1;
    	request->MODULE_SPEC.MOD_OP = HTOLE16 (0);
    	request->MODULE_SPEC.MOD_OP_DATA_LEN = HTOLE16 (sizeof (request->MODULE_SPEC));
    	request->MODULE_SPEC.MOD_OP_RSVD = HTOLE32 (0);
    	request->MODULE_SPEC.MODULE_ID = HTOLE16 (PLC_MODULEID_PARAMETERS);
    	request->MODULE_SPEC.MODULE_SUB_ID = HTOLE16 (0);
    	request->MODULE_SPEC.MODULE_LENGTH = HTOLE16 (PLC_MODULE_SIZE);
    	request->MODULE_SPEC.MODULE_OFFSET = HTOLE32 (0);
    	if (SendMME (plc) <= 0)
    	{
    		error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
    		return (-1);
    	}
    	if (ReadMME (plc, 0, (VS_MODULE_OPERATION | MMTYPE_CNF)) <= 0)
    	{
    		error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
    		return (-1);
    	}
    	if (confirm->MSTATUS)
    	{
    		Failure (plc, PLC_WONTDOIT);
    		return (-1);
    	}
    	pibchain2 (confirm->MODULE_DATA, "device", plc->flags);
    	return (0);
    }

    #endif

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