/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			Nand.c
** Last modified Date:  2007-9-20
** Last Version:		1.0
** Descriptions:		對Nand型Flash K9F28XXUOC進行編程、擦除等操作 
**
**------------------------------------------------------------------------------------------------------
** Created by:			Yuping  Wang    
** Created date:		2007-9-20
** Version:				1.0
** Descriptions:		The original version    初始版本
**
**------------------------------------------------------------------------------------------------------
** Modified by:         楊市平
** Modified date:       2008-03-18
** Version:             V1.1
** Descriptions:        
**
********************************************************************************************************/
#include "config.h"

#define  __GLOBAL_NAND

#define __DATA        (*((volatile uint8 *)0x83000000))                 /* 數(shù)據(jù)操作的存儲器地址         */
#define __ADDR        (*((volatile uint8 *)0x83080000))                 /* 地址輸入的存儲器地址         */
#define __COMMAND     (*((volatile uint8 *)0x83100000))                 /* 命令輸入的存儲器地址         */


/*********************************************************************************************************
** Function name:			nandReadStatus
**
** Descriptions:			讀Nand Flash的狀態(tài)
**							
**
** input parameters:		無
** Returned value:			當前Nand
**
** Created by:				楊市平
** Created Date:			2008/03/18
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/

uint8   nandReadStatus (void)
{
    uint8 ucReturn;
    
    ucReturn  = 0xff;       
   
    __COMMAND = K9FXX_READ_STATUS;                                      /* 輸入讀狀態(tài)命令70H            */
   
    ucReturn  = __DATA;                                                 /* 讀狀態(tài)數(shù)據(jù)                   */
        
    return ucReturn;
}
/*********************************************************************************************************
** Function name:			nandOK
**
** Descriptions:			判斷芯片操作是否完成
**							
**
** input parameters:		無
** Returned value:			TURE:   完成
**                          FALSE:  失敗
** Created by:				楊市平
** Created Date:			2008/03/18
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/

uint8 nandOK (void)
{
    uint8 ucTemp;    
       
    while (1) {
               
        ucTemp = nandReadStatus();                                      /* 讀Nand Flash的當前狀態(tài)       */
        
        ucTemp = ucTemp & K9FXX_BUSY;
         
        if ((ucTemp & K9FXX_BUSY) != 0) {
        
            break;
        }
    }
 
    ucTemp = nandReadStatus();                                          /* 讀Nand Flash的操作是否成功   */
    if ((ucTemp & K9FXX_OK) == 0) {
        return TRUE;
    }
    else {
        return FALSE;
    }
}
/*********************************************************************************************************
** Function name:			nandSectorReadA
**
** Descriptions:			讀芯片扇區(qū)
**							
**
** input parameters:		pucBuf: 指向緩存的指針,大小必須>=512字節(jié)
**                          uiCoL : 以列地址的索引
                            uiRow : 以頁面為單位的索引
                            uiNum : 寫入的字節(jié)數(shù)
** Returned value:			無
**                          
** Created by:				楊市平
** Created Date:			2008/03/18
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/

void nandSectorReadA (uint8 *pucBuf, uint32 uiCol, uint8 uiRow, uint32 uiNum)
{

    uint32  i;
    
    __COMMAND     = K9FXX_SET_ADDR_A;                                   /* 讀頁操作的指令00H            */
    __ADDR        = uiCol;
                                                                        /* 一字節(jié)列地址                 */
    __ADDR        = (uint8)(uiRow & 0xff);                              /* 兩字節(jié)的行地址               */
    __ADDR        = (uint8)((uiRow >> 8) & 0xff);  
    
   
    
    while (1) {
        if ((nandReadStatus() & K9FXX_BUSY) != 0) {                     // 讀Nand Flash的當前狀態(tài)       
        
            break;
        }
    }
    
    __COMMAND     = K9FXX_SET_ADDR_A;  
    
    i = uiNum;
    
    do {                                                                /* 讀出數(shù)據(jù)                     */
        *pucBuf++ = __DATA;
    } while(--i != 0);    
   
}

/*********************************************************************************************************
** Function name:			nandSectorCRead
**
** Descriptions:			讀芯片C區(qū)
**							
**
** input parameters:		pucBuf: 指向緩存的指針,大小必須>=16字節(jié)
**                          uiCoL : 以列地址的索引
                            uiRow : 以頁面為單位的索引
                            uiCNum : 寫入的字節(jié)數(shù)
** Returned value:			無
** Created by:				楊市平
** Created Date:			2008/03/18
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/

void nandSectorCRead (uint8 *pucBuf, uint32 uiCol, uint8 uiRow, uint32 uiCNum)
{

    uint32  i;
    
    __COMMAND     = K9FXX_SET_ADDR_C;                                   /* 讀頁操作空閑區(qū)(C)的指令50H   */
    __ADDR        = uiCol;                                              /* 一字節(jié)列地址                 */
    __ADDR        = (uint8)(uiRow & 0xff);                              /* 兩字節(jié)的行地址               */
    __ADDR        = (uint8)((uiRow >> 8) & 0xff);
        
  
    while (1) {
        if ((nandReadStatus() & K9FXX_BUSY) != 0) {                     // 讀Nand Flash的當前狀態(tài)       
        
            break;
        }
    }
    
    __COMMAND     = K9FXX_SET_ADDR_C;
   
       
    i = uiCNum;
    
    do {
        *pucBuf++ = __DATA;                                             /* 讀出數(shù)據(jù)                     */
    } while(--i != 0);    
   
}

/*********************************************************************************************************
** Function name:			nandSectorProgram
**
** Descriptions:			編程芯片扇區(qū)
**							
**
** input parameters:		pucBuf: 指向要存數(shù)據(jù)的指針,大小必須>=512字節(jié)
**                          uiCoL : 以列地址的索引
                            uiRow : 以頁面為單位的索引
                            uiNum : 寫入的字節(jié)數(shù)
** Returned value:			TURE:   成功
**                          FALSE:  失敗
** Created by:				楊市平
** Created Date:			2008/03/18
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/

uint8 nandSectorProgram (uint8 *pucBuf, uint32 uiCol, uint8 uiRow, uint32 uiNum)
{
    uint32  i;   
    uint8   *pucStr;
   
   
    pucStr = pucBuf;
    
    __COMMAND       = K9FXX_SET_ADDR_A;                                 /* 定位到A區(qū)指令00H             */