emulator.c

sonata2standardsourcedriver的EEProm读写方案

//=============================================================================
// File Name: emulator.c
//
// Copyright 2000 Cirrus Logic Corporation
//
// Description:
//  	The API for the AT24C01A and AT24C02 EEPROM's.
//		This version emulates EEPROM using RAM
//
// Modification History:
//  	$Id: emulator.c,v 1.4 2003/11/20 21:32:17 matthieu Exp $
//  	$Log: emulator.c,v $
//  	Revision 1.4  2003/11/20 21:32:17  matthieu
//  	Remove the //Perl skip lines...
//  	
//  	Revision 1.3  2003/11/20 08:42:09  akipnis
//  	Renamed CLASI functions and responses to follow naming conventions
//  	
//  	Revision 1.2  2003/11/05 01:54:59  haluk
//  	9898 finialized eeprom
//  	
//  	Revision 1.1  2003/09/11 00:55:02  matthieu
//  	Initial Sonata 2 tree
//  	
//  	Revision 1.1.1.1  2003/06/27 03:14:12  jalves
//  	initial check in
//  	
//  	Revision 1.1.1.1  2003/06/06 20:59:06  matthieu
//  	LG code
//  	Initial code from sonata tree with tag  : MATT_20030606
//  	
//  	Revision 1.2  2003/06/02 17:16:43  matthieu
//  	Merge to DVDev_2-5-3
//  	
//  	Revision 1.1  2003/02/18 00:58:22  matthieu
//  	merging to dvdev_2-0-0
//  	
//  	Revision 1.2  2003/01/16 20:03:21  jtodd
//  	Integrated #992
//  	
//  	Revision 1.1.2.1  2003/01/14 15:39:35  dbercot
//  	Changes to kill compiler warnings
//  	Removed flotsam from ASIC header files & created HAL files
//  	
//
//=============================================================================

#include "basetype.h"
#include "eeprom.h"
#include "string.h"

#define BUF_SIZE  0x1000

static Byte m_EEPROMBuf[BUF_SIZE];

int EEPROM_GetSize(Uint32 *size)
{
	*size = BUF_SIZE;
	return SUCCESS;
}

int EEPROM_Write8( Uint32 addr, Byte data )
{
	if ( addr >= BUF_SIZE )
	{
		return FAIL;
	} // end if
	
	m_EEPROMBuf[addr] = data;
	
	return SUCCESS;
}

int EEPROM_Write32( Uint32 addr, Uint32 data )
{
	if ( addr+4 >= BUF_SIZE )
	{
		return FAIL;
	} // end if
	
	(Uint32)m_EEPROMBuf[addr] = data;
	
	return SUCCESS;
}

int EEPROM_BufWrite( Uint32 addr, void * bufPtr, Uint32 length )
{
	if ( addr+length >= BUF_SIZE )
	{
		return FAIL;
	} // end if
	
	memcpy( &m_EEPROMBuf[addr], bufPtr, length );

	return SUCCESS;
}

int EEPROM_Read( Uint32 addr, void * bufPtr, Uint32 length )
{
	if ( addr+length >= BUF_SIZE )
	{
		return FAIL;
	} // end if
	
	memcpy( bufPtr, &m_EEPROMBuf[addr], length );

	return SUCCESS;
}