csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/plc/BootParameters1.c

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

/*====================================================================*
 *
 *   signed BootParameters1 (struct plc * plc)
 *
 *   pib.h
 *
 *   write the parameter information block to SDRAM on a thunderbolt/
 *   lightning powerline device;
 *
 *   The PIB is written to different SDRAM locations depending on the
 *   chipset used; we use PIB major/minor version to determine where
 *   to write the PIB but may switch to using the hardware platform
 *   code derived from the VS_SW_VER message;
 *
 *   Contributor(s):
 *      Charles Maier <cmaier@qca.qualcomm.com>
 *
 *--------------------------------------------------------------------*/

#ifndef BOOTPARAMETERS1_SOURCE
#define BOOTPARAMETERS1_SOURCE

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

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

signed BootParameters1 (struct plc * plc)

{
	struct pib_header pib_header;
	uint32_t offset;
	if (lseek (plc->PIB.file, 0, SEEK_SET))
	{
		error (PLC_EXIT (plc), errno, FILE_CANTHOME, plc->PIB.name);
	}
	if (read (plc->PIB.file, & pib_header, sizeof (pib_header)) != sizeof (pib_header))
	{
		error (PLC_EXIT (plc), errno, FILE_CANTREAD, plc->PIB.name);
	}
	if (lseek (plc->PIB.file, 0, SEEK_SET))
	{
		error (PLC_EXIT (plc), errno, FILE_CANTHOME, plc->PIB.name);
	}

#if 1

/*
 *   this code is a fix to accommodate PIB relocation in memory; it is not needed when
 *   the PIB is stored in an NVM file since the memory address is recorded in the image
 *   header;
 */

	if (BE16TOH (* (uint16_t *) (& pib_header)) < 0x0305)
	{
		offset = LEGACY_PIBOFFSET;
	}
	else if (BE16TOH (* (uint16_t *) (& pib_header)) < 0x0500)
	{
		offset = INT6x00_PIBOFFSET;
	}
	else 
	{
		offset = AR7x00_PIBOFFSET;
	}

#endif

	if (plc->hardwareID < CHIPSET_QCA7420)
	{
		if (WriteMEM (plc, & plc->PIB, 0, offset, LE16TOH (pib_header.PIBLENGTH)))
		{
			return (-1);
		}
		return (0);
	}
	if (WriteExecutePIB (plc, offset, & pib_header))
	{
		return (-1);
	}
	return (0);
}

#endif