norflashcfi.c

Nand read command file

    unsigned int sector)
{
    unsigned short i;
    unsigned short j;
    unsigned short numBlockRegion,numBlockPerRegion;
    unsigned int block = 0;
    
    numBlockRegion = pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.numEraseRegion;
    for (i = 0; i < numBlockRegion; i++) {
    	numBlockPerRegion = (pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.eraseRegionInfo[i]).Y + 1;
    	for (j = 0; j < numBlockPerRegion; j++) {
    		if (block == sector) {
    			return (pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.eraseRegionInfo[i].Z) * 256 ;
    		}
    		block++;
        }
    }
    return 0;
}

//------------------------------------------------------------------------------
/// Returns secort number on specified memory offset.
/// \param pNorFlashInfo  Pointer to a NorFlashInfo instance.
/// \param memoryOffset  Memory offset.
//------------------------------------------------------------------------------
unsigned short NorFlash_GetDeviceSectorInRegion(
    struct NorFlashInfo *pNorFlashInfo,
    unsigned int memoryOffset)
{
	unsigned short numBlockRegion,numBlockPerRegion;
    unsigned short sectorId = 0;
    unsigned int size = 0;
    unsigned char done = 0;
    unsigned short i , j;
    
    numBlockRegion = pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.numEraseRegion;
    
    for (i = 0; i < numBlockRegion; i++) {
    	numBlockPerRegion = (pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.eraseRegionInfo[i]).Y + 1;
        for (j = 0; j < numBlockPerRegion; j++) {
            size+= (pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.eraseRegionInfo[i].Z) * 256 ;
            if(size >= memoryOffset) {
                done = 1;
                break;
            }
            sectorId++;
        }
        if (done) break;
    }
    
    return sectorId;
}

//------------------------------------------------------------------------------
/// Returns start address of specified sector number.
/// \param pNorFlashInfo  Pointer to a NorFlashInfo instance.
/// \param sector  Sector number.
//------------------------------------------------------------------------------
unsigned int NorFlash_GetDeviceSectorAddress(
    struct NorFlashInfo *pNorFlashInfo,
    unsigned int sector)
{
	unsigned short numBlockRegion,numBlockPerRegion;
    unsigned short sectorId = 0;
    unsigned int address = 0;
    unsigned char done = 0;
    unsigned short i , j;
    
    numBlockRegion = pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.numEraseRegion;
    for (i = 0; i < numBlockRegion; i++) {
    	numBlockPerRegion = (pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.eraseRegionInfo[i]).Y + 1;
        for (j = 0; j < numBlockPerRegion; j++) {
            if (sector == sectorId) {
                done = 1;
                break;
            }
            address+= (pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.eraseRegionInfo[i].Z) * 256 ;
            sectorId++;
        }
        if (done) break;
    }
    
    return address;
}

//------------------------------------------------------------------------------
/// Convert address to byte addressing.
/// \param pNorFlashInfo  Pointer to a NorFlashInfo instance.
/// \Param offset Address offset
//------------------------------------------------------------------------------
unsigned int NorFlash_GetByteAddress(
   struct NorFlashInfo *pNorFlashInfo, unsigned int offset)
{
    return (offset * pNorFlashInfo-> deviceChipWidth);
}

//------------------------------------------------------------------------------
/// Convert address to byte addressing and return the address in chip.
/// \param pNorFlashInfo  Pointer to a NorFlashInfo instance.
/// \Param offset Address offset
//------------------------------------------------------------------------------
unsigned int NorFlash_GetByteAddressInChip(
   struct NorFlashInfo *pNorFlashInfo, unsigned int offset)
{
    return (pNorFlashInfo->baseAddress + (offset * pNorFlashInfo-> deviceChipWidth));
}


//------------------------------------------------------------------------------
/// Returns the address in chip.
/// \param pNorFlashInfo  Pointer to a NorFlashInfo instance.
/// \Param offset Address offset
//------------------------------------------------------------------------------
unsigned int NorFlash_GetAddressInChip(struct NorFlashInfo *pNorFlashInfo, unsigned int offset)
{
    return (pNorFlashInfo->baseAddress + offset);
}

//------------------------------------------------------------------------------
/// Returns bus width in bits of giving device.
/// \param pNorFlashInfo  Pointer to a NorFlashInfo instance.
//------------------------------------------------------------------------------
unsigned char NorFlash_GetDataBusWidth( struct NorFlashInfo *pNorFlashInfo)
{
    return (pNorFlashInfo->deviceChipWidth * 8);
}
    
//------------------------------------------------------------------------------
/// Returns the size of the whole device in bytes 
/// \param pNorFlashInfo  Pointer to a NorFlashInfo instance.
//------------------------------------------------------------------------------
unsigned long  NorFlash_GetDeviceSizeInBytes(
   struct NorFlashInfo *pNorFlashInfo)
{
    return ((unsigned long) 2 << ((pNorFlashInfo->cfiDescription.norFlashCfiDeviceGeometry.deviceSize) - 1));
}

//------------------------------------------------------------------------------
/// Looks for query struct in Norflash common flash interface.
/// If found, the model variable is filled with the correct values.
/// This function returns 0 if a matching model has been found; otherwise it
/// returns NorCommon_ERROR_UNKNOWNMODEL.
//------------------------------------------------------------------------------
unsigned char NorFlash_CFI_Detect(
    struct NorFlash *pNorFlash, 
    unsigned char hardwareBusWidth)
{
	
    unsigned char i;
    unsigned char *pCfi = (unsigned char*)(&(pNorFlash->norFlashInfo.cfiDescription));
    unsigned int address;
    
    pNorFlash->norFlashInfo.cfiCompatible = 0;
    pNorFlash->norFlashInfo.deviceChipWidth = hardwareBusWidth;
    address = CFI_QUERY_OFFSET;
    for(i = 0; i< sizeof(struct NorFlashInfo) ; i++){
        WriteCommand(8, NorFlash_GetByteAddressInChip(&(pNorFlash->norFlashInfo), CFI_QUERY_ADDRESS), CFI_QUERY_COMMAND);
        ReadRawData(8, NorFlash_GetByteAddressInChip(&(pNorFlash->norFlashInfo), address), pCfi);
        address++;
        pCfi++;
        
    }
    // Check the query-unique ASCII string "QRY"
    if( (pNorFlash->norFlashInfo.cfiDescription.norFlashCfiQueryInfo.queryUniqueString[0] != 'Q' )
        || (pNorFlash->norFlashInfo.cfiDescription.norFlashCfiQueryInfo.queryUniqueString[1] != 'R') 
        || (pNorFlash->norFlashInfo.cfiDescription.norFlashCfiQueryInfo.queryUniqueString[2] != 'Y') ) {
        return NorCommon_ERROR_UNKNOWNMODEL;
    }
    
#ifdef DUMP_CFI    
	NorFlash_CFI_DumpConfigruation(&(pNorFlash->norFlashInfo.cfiDescription));
#endif

	if (pNorFlash->norFlashInfo.cfiDescription.norFlashCfiQueryInfo.primaryCode == CMD_SET_AMD) {
		pNorFlash->pOperations = &amdOperations;
	}
	else if (pNorFlash->norFlashInfo.cfiDescription.norFlashCfiQueryInfo.primaryCode == CMD_SET_INTEL_EXT) {
		pNorFlash->pOperations = &intelOperations;
	}
	else {
		return NorCommon_ERROR_UNKNOWNMODEL;
	}
	
	pNorFlash->norFlashInfo.cfiCompatible = 1;
    NORFLASH_Reset(pNorFlash, 0);
    return 0;
}