fmd.cpp

SMDK2450的BSP 有很多新的特性,记得升级PB啊.

			pSectorBuff += NAND_SECTOR_SIZE;
		}
		++SectorAddr;
	}
	NF_nFCE_H();										// Deselect the flash chip.

	SetKMode (bLastMode);
	
	return(TRUE);
}


BOOL FMD_LB_EraseBlock(BLOCK_ID blockID, int mode)
{
	BOOL    bRet = TRUE;
	DWORD   dwPageID = blockID << LB_NAND_LOG_2_PAGES_PER_BLOCK;

	BOOL bLastMode = SetKMode(TRUE);

	//RETAILMSG(1, (TEXT("FMD_LB_EraseBlock 0x%x \r\n"), blockID));

	//  Enable the chip
	NF_nFCE_L();						// Select the flash chip.

	NF_CLEAR_RB();

	//  Issue command
	NF_CMD(CMD_ERASE);

	//  Set up address
	NF_ADDR((dwPageID) & 0xff);
	NF_ADDR((dwPageID >> 8) & 0xff);
	if (LB_NEED_EXT_ADDR)
	{
		NF_ADDR((dwPageID >> 16) & 0xff);
	}

	//  Complete erase operation
	NF_CMD(CMD_ERASE2);

	//  Wait for ready bit
	NF_DETECT_RB();	 // Wait tR(max 12us)

	// 搬苞 惑怕 眉农
	if ( NF_RDSTAT & STATUS_ILLACC )
	{
        	RETAILMSG(1, (TEXT("LB######## Error Erasing block (Illigar Access) %d!\n"), blockID));
		s2450NAND->NFSTAT =  STATUS_ILLACC;	// Write 1 to clear.
		bRet = FALSE;
	}
	else
	{
		//  Check the status
		NF_CMD(CMD_STATUS);

		if( NF_RDDATA_BYTE() & STATUS_ERROR) {
			RETAILMSG(1, (TEXT("LB######## Error Erasing block %d!\n"), blockID));
			bRet = FALSE;
		}
	}

	NF_nFCE_H();						// Select the flash chip.

	SetKMode(bLastMode);

	return bRet;
}

BOOL FMD_SB_EraseBlock(BLOCK_ID blockID, int mode)
{
	BOOL    bRet = TRUE;
	DWORD   dwPageID = blockID << SB_NAND_LOG_2_PAGES_PER_BLOCK;

	BOOL bLastMode = SetKMode(TRUE);

	//RETAILMSG(1, (TEXT("FMD_sb_EraseBlock 0x%x \r\n"), blockID));

    //  Enable the chip
	NF_nFCE_L();						// Select the flash chip.

    //  Issue command
	NF_CMD(CMD_ERASE);

    //  Set up address
	NF_ADDR((dwPageID) & 0xff);
	NF_ADDR((dwPageID >> 8) & 0xff);
	if (SB_NEED_EXT_ADDR)
		NF_ADDR((dwPageID >> 16) & 0xff);

	NF_CLEAR_RB();
	//  Complete erase operation
	NF_CMD(CMD_ERASE2);

	//  Wait for ready bit
	NF_DETECT_RB();	 // Wait tR(max 12us)

	if ( NF_RDSTAT & STATUS_ILLACC )
	{
		RETAILMSG(1, (TEXT("SB######## Error Erasing block (Illigar Access) %d!\n"), blockID));
		s2450NAND->NFSTAT =  STATUS_ILLACC;	// Write 1 to clear.
		bRet = FALSE;
	}
	else
	{
		//  Check the status
		NF_CMD(CMD_STATUS);

		if( NF_RDDATA_BYTE() & STATUS_ERROR) {
			RETAILMSG(1, (TEXT("SB######## Error Erasing block %d!\n"), blockID));
			bRet = FALSE;
		}
	}

	NF_nFCE_H();						// Select the flash chip.

	SetKMode(bLastMode);

	return bRet;
}


DWORD FMD_LB_GetBlockStatus(BLOCK_ID blockID, int mode)
{
	SECTOR_ADDR sectorAddr = blockID << LB_NAND_LOG_2_PAGES_PER_BLOCK;
	SectorInfo SI;
	DWORD dwResult = 0;
	
	BOOL bLastMode = SetKMode(TRUE);
	
	//RETAILMSG(1, (TEXT("FMD_LB_GetBlockStatus (0x%x)0x%x \r\n"), blockID, sectorAddr));
	
	if(!FMD_LB_ReadSector(sectorAddr, NULL, &SI, 1, mode))
	{
		return BLOCK_STATUS_UNKNOWN;
	}
	
	if(!(SI.bOEMReserved & OEM_BLOCK_READONLY))
	{
		dwResult |= BLOCK_STATUS_READONLY;
	}
	
	if (!(SI.bOEMReserved & OEM_BLOCK_RESERVED))
	{
		dwResult |= BLOCK_STATUS_RESERVED;
	}
	
	if(SI.bBadBlock != 0xFF)
	{
		dwResult |= BLOCK_STATUS_BAD;
	}
	
	SetKMode(bLastMode);
	
	return dwResult;
}

DWORD FMD_SB_GetBlockStatus(BLOCK_ID blockID, int mode)
{
    SECTOR_ADDR sectorAddr = blockID << SB_NAND_LOG_2_PAGES_PER_BLOCK;
    SectorInfo SI;
    DWORD dwResult = 0;

	BOOL bLastMode = SetKMode(TRUE);

	//RETAILMSG(1, (TEXT("FMD_SB_GetBlockStatus (0x%x)0x%x \r\n"), blockID, sectorAddr));

	if(!FMD_SB_ReadSector(sectorAddr, NULL, &SI, 1, mode))
	{
        return BLOCK_STATUS_UNKNOWN;
	}

    if(!(SI.bOEMReserved & OEM_BLOCK_READONLY))
	{
        dwResult |= BLOCK_STATUS_READONLY;
	}

    if(SI.bBadBlock != 0xFF)
	{
        dwResult |= BLOCK_STATUS_BAD;
	}
	
	SetKMode(bLastMode);
	
    return dwResult;
}

BOOL FMD_LB_SetBlockStatus(BLOCK_ID blockID, DWORD dwStatus, int mode)
{
	BYTE bStatus = 0;

    if(dwStatus & BLOCK_STATUS_BAD)
	{
        if(!LB_MarkBlockBad (blockID, mode))
        {
            return FALSE;
        }
    }

    // We don't currently support setting a block to read-only, so fail if request is
    // for read-only and block is not currently read-only.
    if(dwStatus & BLOCK_STATUS_READONLY)
	{
        if(!(FMD_LB_GetBlockStatus(blockID, mode) & BLOCK_STATUS_READONLY))
        {
            return FALSE;
        }
    }

    return TRUE;
}

BOOL FMD_SB_SetBlockStatus(BLOCK_ID blockID, DWORD dwStatus, int mode)
{
    SECTOR_ADDR sectorAddr = blockID << SB_NAND_LOG_2_PAGES_PER_BLOCK;
	BYTE bStatus = 0;

	//RETAILMSG(1,(TEXT("#### FMD_DRIVER:::FMD_sbsetblock \r\n")));
	
    if(dwStatus & BLOCK_STATUS_BAD)
	{
        if(!SB_MarkBlockBad (blockID, mode))
        {
            return FALSE;
        }
    }

    // We don't currently support setting a block to read-only, so fail if request is
    // for read-only and block is not currently read-only.
    if(dwStatus & BLOCK_STATUS_READONLY)
	{
        if(!(FMD_SB_GetBlockStatus(blockID, mode) & BLOCK_STATUS_READONLY))
        {
            return FALSE;
        }
    }

    return TRUE;
}

BOOL LB_MarkBlockBad(BLOCK_ID blockID, int mode)
{
	DWORD   dwStartPage = blockID << LB_NAND_LOG_2_PAGES_PER_BLOCK;
	BOOL    bRet = TRUE;

//	RETAILMSG(1, (TEXT("LB_MarkBlockBad 0x%x \r\n"), dwStartPage));
	BOOL bLastMode = SetKMode(TRUE);

    //  Enable chip
	NF_nFCE_L();
	NF_CLEAR_RB();

    //  Issue command
    //  We are dealing with spare area
	NF_CMD(CMD_WRITE);

    //  Set up address
	NF_ADDR((2048)&0xff);
	NF_ADDR(((2048)>>8)&0xff);
	NF_ADDR((dwStartPage) & 0xff);
	NF_ADDR((dwStartPage >> 8) & 0xff);
	if (LB_NEED_EXT_ADDR)
		NF_ADDR((dwStartPage >> 16) & 0xff);

	NF_WRDATA_BYTE(BADBLOCKMARK);

    //  Copmlete the write
	NF_CMD(CMD_WRITE2);

    //  Wait for RB
	NF_DETECT_RB();	 // Wait tR(max 12us)

	if ( NF_RDSTAT & STATUS_ILLACC )
	{
		RETAILMSG(1, (TEXT("NAND_LB_WriteSectorInfo() ######## Error Programming page (Illigar Access) %d!\n")));
		s2450NAND->NFSTAT =  STATUS_ILLACC;	// Write 1 to clear.
       	bRet = FALSE;
	}
	else
	{
		//  Check the status of program
		NF_CMD(CMD_STATUS);

		if( NF_RDDATA_BYTE() & STATUS_ERROR) {
			RETAILMSG(1, (TEXT("NAND_LB_WriteSectorInfo() ######## Error Programming page %d!\n")));
			bRet = FALSE;
		}
	}

    //  Disable chip select
    NF_nFCE_H();

    SetKMode(bLastMode);

    return bRet;
}

BOOL SB_MarkBlockBad(BLOCK_ID blockID, int mode)
{
	DWORD   dwStartPage = blockID << SB_NAND_LOG_2_PAGES_PER_BLOCK;
	BOOL    bRet = TRUE;

	//RETAILMSG(1, (TEXT("SB_MarkBlockBad 0x%x \r\n"), dwStartPage));

	BOOL bLastMode = SetKMode(TRUE);

    //  Enable chip
	NF_nFCE_L();
	NF_CLEAR_RB();

    //  Issue command
    //  We are dealing with spare area
	NF_CMD(CMD_READ2);
	NF_CMD(CMD_WRITE);

    //  Set up address
	NF_ADDR(0);
	NF_ADDR((dwStartPage) & 0xff);
	NF_ADDR((dwStartPage >> 8) & 0xff);
	if (SB_NEED_EXT_ADDR)
		NF_ADDR((dwStartPage >> 16) & 0xff);

	NF_WRDATA_BYTE(BADBLOCKMARK);

    //  Copmlete the write
	NF_CMD(CMD_WRITE2);

    //  Wait for RB
	NF_DETECT_RB();	 // Wait tR(max 12us)

	if ( NF_RDSTAT & STATUS_ILLACC )
	{
		RETAILMSG(1, (TEXT("NAND_LB_WriteSectorInfo() ######## Error Programming page (Illigar Access) %d!\n")));
		s2450NAND->NFSTAT =  STATUS_ILLACC;	// Write 1 to clear.
       	bRet = FALSE;
	}
	else
	{
		//  Check the status of program
		NF_CMD(CMD_STATUS);

		if( NF_RDDATA_BYTE() & STATUS_ERROR) {
			RETAILMSG(1, (TEXT("NAND_LB_WriteSectorInfo() ######## Error Programming page %d!\n")));
			bRet = FALSE;
		}
	}

    //  Disable chip select
    NF_nFCE_H();

    SetKMode(bLastMode);

    return bRet;
}

BOOL LB_IsBlockBad(BLOCK_ID blockID, int mode)
{
	// blockID = 2048俺 = 11bit, Log2(pages/block) = 6
	// 弊矾骨肺 dwPageID = 17bit (== row address)
	DWORD   dwPageID = blockID << LB_NAND_LOG_2_PAGES_PER_BLOCK;
	BOOL    bRet = FALSE;
	BYTE    wFlag;

	BOOL bLastMode = SetKMode(TRUE);
	
	//  Enable the chip
	NF_nFCE_L();
	NF_CLEAR_RB();
	
	//  Issue the command
	NF_CMD(CMD_READ);
	
	//  Set up address
	// 2048+0x05 == 抗厚康开狼 5锅瘤 byte ==> Bad block marker. 0xff啊 酒聪搁 bad block
	// 1cycle + 2cycle address = column address -> page俊辑狼 byte困摹 钎矫(12bit)
	NF_ADDR((2048)&0xff);
	NF_ADDR(((2048)>>8)&0xff);
	
	// 3cycle + 4cycle + 5cycle = row address -> block狼 困摹 钎矫(2048俺狼 block, 11bit)
	NF_ADDR((dwPageID) & 0xff);
	NF_ADDR((dwPageID >> 8) & 0xff);
	if (LB_NEED_EXT_ADDR)
		NF_ADDR((dwPageID >> 16) & 0xff);
	
	NF_CMD(CMD_READ3);
	
	//  Wait for Ready bit
	NF_DETECT_RB();	 // Wait tR(max 12us) -> NFSTAT狼 4锅bit客 1锅bit啊 1捞 瞪 锭鳖瘤 公茄风橇
	
	//  Now get the byte we want
	wFlag = (BYTE)(NF_RDDATA_BYTE()&0xff);
	
	if(wFlag != 0xff) {	//抗厚康开狼 5锅瘤啊 0xff啊 酒聪搁 Bad block
		RETAILMSG(1, (TEXT("FMDLB: IsBlockBad - Page #: 0x%x \r\n"), dwPageID));
		bRet = TRUE;
	}
	
	//  Disable the chip
	NF_nFCE_H();
	
	SetKMode(bLastMode);
	
	return bRet;
}


// small block 老 锭
BOOL SB_IsBlockBad(BLOCK_ID blockID, int mode)
{
	DWORD   dwPageID = blockID << SB_NAND_LOG_2_PAGES_PER_BLOCK;
	BOOL    bRet = FALSE;
	BYTE    wFlag;
	
	//RETAILMSG(1,(TEXT("#### FMD_DRIVER:::FMD_sbisblockbad \r\n")));
	
	BOOL bLastMode = SetKMode(TRUE);
	
	//  Enable the chip
	NF_nFCE_L();
	NF_CLEAR_RB();
	//  Issue the command
	NF_CMD(CMD_READ2);
	
	//  Set up address
	NF_ADDR(0);
	NF_ADDR((dwPageID) & 0xff);
	NF_ADDR((dwPageID >> 8) & 0xff);
	if (SB_NEED_EXT_ADDR)
		NF_ADDR((dwPageID >> 16) & 0xff);
	
	//  Wait for Ready bit
	NF_DETECT_RB();	 // Wait tR(max 12us)
	
	//  Now get the byte we want
	wFlag = (BYTE) NF_RDDATA_BYTE();
	
	if(wFlag != 0xff) {
		RETAILMSG(1, (TEXT("FMDSB: IsBlockBad - Page #: 0x%x \r\n"), dwPageID));
		bRet = TRUE;
	}
		
	//  Disable the chip
	NF_nFCE_H();
	
	SetKMode(bLastMode);
	
	return bRet;
}