📄 drv_nandflash.c
字号:
asm("nop");
do{}
while (!CHECK_BUSY); /*wait R/#B to high*/
SET_CLE_H; /* set CLE high*/
*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS=READ_STATUS_CMD;
SET_CLE_L; /*set CLE l */
ReadStatus=*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS;
SET_NAND_CE_H;
if (ReadStatus & 0x1)
return FLASH_WRITE_ERR;
return RetVal;
}
//---------------------------------------------------------------------------------
// Function name : fnFlash_BlockErase
// Function description : write page data to SMC
//
// Parameters
// Input :unsigned long ulAddress block address
// Output :
// I/O :void
//
// Return value :unsigned char FLASH_SUCCESS Success
// FLASH_PAR_ERR parameter error
// FLASH_ERASE_ERR erase error
// Global variable :void
//---------------------------------------------------------------------------------
unsigned char fnFlash_BlockErase(unsigned long ulAddress){
unsigned char ReadStatus;
unsigned char RetVal;
unsigned short pageAddr,blockAddrL,blockAddrH;
#ifdef DEBUG
if((ulAddress < 0 ) || ( ulAddress >= (MAX_BLK_NUM * MAX_PG_NUM * PG_SIZE) ))
return FLASH_PAR_ERR;
#endif
pageAddr=(unsigned short)((ulAddress & 0x0001fe00)>>9) ; /*A16-9*/
blockAddrL=(unsigned short)((ulAddress & 0x0fe0000)>>17); /*A23-17*/
// blockAddrH=(unsigned short)((ulAddress & 0x10000000)>>28); /*A28*/
SET_NAND_CE_L;
SET_CLE_H; /* set CLE high*/
*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS=AUTO_ERASE_CMD;/* write command*/
SET_CLE_L; /* set CLE low*/
SET_ALE_H; /* set ALE h*/
*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS=pageAddr; /* send page address*/
*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS=blockAddrL; /* send block l address*/
// *(volatile unsigned char*)NAND_Flash_BASE_ADDRESS=blockAddrH; /* send block h address*/
SET_ALE_L; /*set ALE L*/
SET_CLE_H; /* set CLE high*/
*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS=ERASE_CMD;
SET_CLE_L; /*set CLE l*/
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
asm("nop");
do{}
while (!CHECK_BUSY); /*wait R/#B to high*/
SET_CLE_H; /* set CLE high*/
*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS=READ_STATUS_CMD;
SET_CLE_L; /*set CLE l*/
ReadStatus=*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS;
SET_NAND_CE_H;
if (ReadStatus & 0x1)
return FLASH_ERASE_ERR;
return FLASH_SUCCESS;
}
//---------------------------------------------------------------------------------
// Function name : Flash_Load_Init
// Function description : called by fnFlshErase, every time download srf/sa file from debug tool
// must call fnFlshErase.
//
// Parameters
// Input : void
// Output :
// I/O : void
//
// Return value : unsigned char
//
//
// Global variable :void
//---------------------------------------------------------------------------------
void Flash_Load_Init(void){
/*Initialize count for fnFlashLoad*/
databuf_cnt=0;
fls_ldcnt=0;
checkSum=0x0;
page_cnt=0;
}
//---------------------------------------------------------------------------------
// Function name : fnFlshLoad
// Function description : called by debug tool to download srf/sa file
//
//
// Parameters
// Input : void
// Output :
// I/O : void
//
// Return value :unsigned char FLASH_SUCCESS write Success
// FLASH_ECC_ERROR ecc check error
// FLASH_PAR_ERR parameter error
// FLASH_WRITE_ERR write error
//
// Global variable :void
//---------------------------------------------------------------------------------
unsigned char fnFlshLoad(unsigned long ulPA, unsigned long ulData1, unsigned long ulData2){
int i;
unsigned char RetVal,TempData;
unsigned long TempAddr;
//ulOldPA=ulPA;
fls_ldcnt++;
//ulData1;
TempData=(unsigned short)(ulData1&0x00ff);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
TempData=(unsigned short)((ulData1&0xff00)>>8);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
TempData=(unsigned short)((ulData1&0xff0000)>>16);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
TempData=(unsigned short)((ulData1&0xff000000)>>24);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
//ulData2
TempData=(unsigned short)(ulData2&0x00ff);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
TempData=(unsigned short)((ulData2&0xff00)>>8);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
TempData=(unsigned short)((ulData2&0xff0000)>>16);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
TempData=(unsigned short)((ulData2&0xff000000)>>24);
write_buf[databuf_cnt++]=TempData;
checkSum+=TempData;
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
#ifdef BOOT
if (!(fls_ldcnt%2)){//>16 calc checksum
#ifdef BOOT_L05
write_buf[databuf_cnt++]=~checkSum;
#else
write_buf[databuf_cnt++]=checkSum;
#endif
#ifdef BOOT_16
// fill high 8 bit
write_buf[databuf_cnt++]=0x00;
#endif
checkSum=0;
}
#endif
if (fls_ldcnt>=MAX_LD_CNT){
#ifdef BOOT
#ifdef BOOT_16
memset(&write_buf[databuf_cnt],0xff,2); //only 255
#else
memset(&write_buf[databuf_cnt],0xff,257); //only 255
#endif
#endif
TempAddr=ulStAddr+page_cnt*PG_SIZE;
RetVal=DOWNLOAD_FUN(TempAddr & 0xfffffe00,(unsigned char*)write_buf);
databuf_cnt=0;
fls_ldcnt=0;
page_cnt++;
}
return FLASH_SUCCESS;
}
//---------------------------------------------------------------------------------
// Function name : fnFlshErase
// Function description : called by debug tool to erase srf/sa file
//
//
// Parameters
// Input : unsigned short ulCtrlReg the start destination address where need to write data to
// unsigned short ulBlockBgn start block (base on 1)
// unsigned short ulBlockEnd end block (base on 1)
// Output :
// I/O : void
//
// Return value :unsigned char FLASH_SUCCESS Success
// FLASH_PAR_ERR parameter error
// FLASH_ERASE_ERR erase error
// Global variable :void
//---------------------------------------------------------------------------------
unsigned char fnFlshErase( unsigned long ulCtrlReg, unsigned long ulBlockBgn, unsigned long ulBlockEnd ){
unsigned short Cnt;
unsigned char RetVal;
unsigned short ulEnd,ulBeg;
unsigned long TempAddr;
#ifdef DEBUG
if( ulBlockBgn >= MAX_BLK_NUM ) /*start block parameter is NG */
return FLASH_PAR_ERR;
else if(( ulBlockEnd<ulBlockBgn ) || ( ulBlockEnd >MAX_BLK_NUM )) /*end block parameter is NG*/
return FLASH_PAR_ERR;
#endif
if( (long)ulBlockBgn == -2){
TempAddr=ulStAddr+page_cnt*PG_SIZE;
RetVal=DOWNLOAD_FUN(TempAddr & 0xfffffe00,(unsigned char*)write_buf);
if( RetVal == FLASH_SUCCESS )
RetVal = FLASH_BUF_FLUSH;
databuf_cnt=0;
fls_ldcnt=0;
page_cnt++;
return RetVal;
}
/* area 6 for internal access , other external area, little endian*/
*(volatile unsigned short*)0x48132=0x0200;
/* area 6 1 wait cycle, area5 0 wait cycle*/
*(volatile unsigned short*)0x4812a=0x0100;
*(volatile unsigned char*)0x48131=0x04;
Flash_Load_Init();
ulStAddr=ulCtrlReg;
FLASH_INIT();
//parameter check
if( !ulBlockBgn ){
ulEnd=MAX_BLK_NUM;
ulBeg=1;
}
else {
ulEnd=ulBlockEnd;
ulBeg=ulBlockBgn;
}
for (Cnt=ulBeg-1;Cnt<ulEnd; Cnt++){
RetVal=ERASE_FUN(Cnt*BLK_SIZE);
if (RetVal!=FLASH_SUCCESS)
return RetVal;
}
return FLASH_SUCCESS;
}
/**************************************************************************************************
* Name: fnReadID_flash
* Type: T_UBYTE
* Ret val: return value of erase sector
* FLASH_SUCCESS read Success
* FLASH_FAILED read failed
* FLASH_ECC_ERROR
* FLASH_PAR_ERR
* Argument: T_UWORD ulAddress start address
* T_UBYTE* pReadBuf buf for store read data
* Function: read Smart Media card ID data
*************************************************************************************************/
unsigned char fnReadID_flash(unsigned char* pID_Data){
unsigned char Cnt;
SET_NAND_CE_L;
SET_CLE_H; // set CLE H
*( volatile unsigned char*)NAND_Flash_BASE_ADDRESS=READ_ID; // read id 1
SET_CLE_L; // set CLE low
SET_ALE_H; // set ALE h
*( volatile unsigned char*)NAND_Flash_BASE_ADDRESS=READ_ID_ADDR; // send address
SET_ALE_L; //set ALE L
fnCheck_busy();
for (Cnt = 0; Cnt <2; Cnt++){
*pID_Data++=*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS;
}
SET_NAND_CE_H;
return FLASH_SUCCESS;
}⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -