📄 drv_nf.c
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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 & 0x01fe0000)>>17); /*A24-17*/
blockAddrH=(unsigned short)((ulAddress & 0x0e000000)>>25); /*A27-25*/
SET_CLE_H; /* set CLE high*/
*(volatile unsigned short*)NAND_Flash_BASE_ADDRESS=AUTO_ERASE_CMD;/* write command*/
SET_CLE_L; /* set CLE low*/
SET_ALE_H; /* set ALE h*/
*(volatile unsigned short*)NAND_Flash_BASE_ADDRESS=pageAddr; /* send page address*/
*(volatile unsigned short*)NAND_Flash_BASE_ADDRESS=blockAddrL; /* send block l address*/
*(volatile unsigned short*)NAND_Flash_BASE_ADDRESS=blockAddrH; /* send block h address*/
SET_ALE_L; /*set ALE L*/
SET_CLE_H; /* set CLE high*/
*(volatile unsigned short*)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 short*)NAND_Flash_BASE_ADDRESS=READ_STATUS_CMD;
SET_CLE_L; /*set CLE l*/
ReadStatus=*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS;
if (ReadStatus & 0x1)
return FLASH_ERASE_ERR;
return FLASH_SUCCESS;
}
//---------------------------------------------------------------------------------
// Function name : fnSMC_ReadID
// Function description : read ID of SMC
//
//
// Parameters
// Input : void
// Output :
// I/O : void
//
// Return value : void
//
//
// Global variable :void
//---------------------------------------------------------------------------------
void fnSMC_ReadID(unsigned char* pID_Data){
unsigned char Cnt;
SET_SMC_CE_L; /*set SMC CE H*/
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*/
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*/
for (Cnt = 0; Cnt <5; Cnt++){
*pID_Data++=*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS;
}
SET_SMC_CE_H; /*set SMC CE H*/
return ;
}
//---------------------------------------------------------------------------------
// Function name : fnFlash_ReadID
// Function description : read ID of nand flash
//
//
// Parameters
// Input : void
// Output :
// I/O : void
//
// Return value : void
//
//
// Global variable :void
//---------------------------------------------------------------------------------
unsigned char fnFlash_ReadID(unsigned char* pID_Data){
unsigned char Cnt;
SET_CLE_H; /* set CLE H */
*(volatile unsigned short*)NAND_Flash_BASE_ADDRESS=READ_ID; /* read id 1*/
SET_CLE_L; /* set CLE low*/
SET_ALE_H; /* set ALE h*/
*(volatile unsigned short*)NAND_Flash_BASE_ADDRESS=READ_ID_ADDR; /* send address*/
SET_ALE_L; /*set ALE 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*/
for (Cnt = 0; Cnt <5; Cnt++){
*pID_Data++=*(volatile unsigned char*)NAND_Flash_BASE_ADDRESS;
}
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;
//if (ulPA<(ulOldPA+8))
// tmp_buf[p++]=ulPA;
//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();
//for (Cnt=0;Cnt<1024;Cnt++) //for test
// tmp_buf[Cnt]=0;
//p=0;
//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;
}
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