pieeprom.c

VIA VT6524 8口网管交换机源码

/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * This software is copyrighted by and is the sole property of
 * VIA Networking Technologies, Inc. This software may only be used
 * in accordance with the corresponding license agreement. Any unauthorized
 * use, duplication, transmission, distribution, or disclosure of this
 * software is expressly forbidden.
 *
 * This software is provided by VIA Networking Technologies, Inc. "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 VIA Networking Technologies, Inc.
 * be liable for any direct, indirect, incidental, special, exemplary, or
 * consequential damages.
 *
 *
 * File:    pieeprom.c
 *
 * Purpose: UI controlled EEPROM accessing functions
 *
 * Author:  Tevin Chen
 *
 * Date:    Jan 08, 2002
 *
 * Functions:
 *
 * Revision History:
 *
 */


#include "sweep.h"
#include "pieeprom.h"
#include "pidef.h"




/*---------------------  Static Definitions -------------------------*/

/*---------------------  Static Classes  ----------------------------*/

/*---------------------  Static Variables  --------------------------*/

/*---------------------  Static Functions  --------------------------*/

/*---------------------  Export Variables  --------------------------*/

/*---------------------  Export Macros  -----------------------------*/

/*---------------------  Export Functions  --------------------------*/
void PIEEP_vGetCfgFromEep (UINT16 byAddr, UINT8 bySize, PBYTE abyCfgBuf) DIRECT_FUNTYPE_REENT
{
    UINT8   si;

    for (si = 0; si < bySize; si++)
        SWEEP_bReadB (si + byAddr, &abyCfgBuf[si]);
}


void PIEEP_vSetCfgIntoEep (PBYTE abyCfgBuf, UINT16 byAddr, UINT8 bySize) DIRECT_FUNTYPE_REENT
{
    UINT8 si;

    for (si = 0; si < bySize; si++)
        SWEEP_bWriteB(si + byAddr, abyCfgBuf[si]);
}


void PIEEP_vUpdateChecksum(void) DIRECT_FUNTYPE_REENT
{
    BYTE    byEepBuf, byChecksum = 0;
    UINT16  ui;

    for (ui = EEP_ADDR_CHECKSUM_START; ui < EEP_ADDR_CHECKSUM; ui++) {
        SWEEP_bReadB(ui, &byEepBuf);
        byChecksum ^= byEepBuf;
    }

    SWEEP_bWriteB(EEP_ADDR_CHECKSUM, byChecksum);
}


BOOL PIEEP_bVerifyChecksum(void) DIRECT_FUNTYPE_REENT
{
    BYTE    byEepBuf, byChecksum = 0;
    UINT16  ui;

    for (ui = EEP_ADDR_CHECKSUM_START; ui <= EEP_ADDR_CHECKSUM; ui++) {
    	SWEEP_bReadB(ui, &byEepBuf);
        byChecksum ^= byEepBuf;
    }

    if (byChecksum == 0)
        return TRUE;
    else
        return FALSE;
}


BOOL PIEEP_bCheckVerAndSig(void) DIRECT_FUNTYPE_REENT
{
    BYTE byValue;
    SWEEP_bReadB(EEP_ADDR_SIGNATURE, &byValue);
    if (byValue != EEP_VALUE_SIGNATURE)
        return FALSE;

    SWEEP_bReadB(EEP_ADDR_CONTENT_VER, &byValue);
    if (byValue != EEP_VALUE_CONTENT_VER)
        return FALSE;

    return TRUE;
}


void PIEEP_vSetVerAndSig(void) DIRECT_FUNTYPE_REENT
{
    SWEEP_bWriteB(EEP_ADDR_SIGNATURE, EEP_VALUE_SIGNATURE);
    SWEEP_bWriteB(EEP_ADDR_CONTENT_VER, EEP_VALUE_CONTENT_VER);
    PIEEP_vUpdateChecksum();
}