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STM32H750XB_RT-THREAD/25-FMC—扩展外部NAND/User/nand/ftl.c

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STM32H750 RTThread 例程
2025-07-21 06:34:29 +00:00
#include "./nand/ftl.h"
#include "string.h"
#include "./nand/bsp_nand.h"
#include "./malloc/malloc.h"
//<2F><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5>
//V1.1 20160124
//<2F>޸<EFBFBD>FTL_CopyAndWriteToBlock<63><6B>FTL_WriteSectors<72><73><EFBFBD><EFBFBD>,<2C><><EFBFBD>߷<EFBFBD>0XFFʱ<46><CAB1>д<EFBFBD><D0B4><EFBFBD>ٶ<EFBFBD>.
//V1.2 20160520
//1,<2C>޸<EFBFBD>FTL_ReadSectors,<2C><><EFBFBD><EFBFBD>ECC<43><43><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>,<2C><><EFBFBD>⻵<EFBFBD>鴦<EFBFBD><E9B4A6>,<2C><><EFBFBD><EFBFBD><EFBFBD>Ӷ<EFBFBD><D3B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>
//2,<2C><><EFBFBD><EFBFBD>FTL_BlockCompare<72><65>FTL_SearchBadBlock<63><6B><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѱ<EFBFBD><D1B0><EFBFBD><EFBFBD>
//3,<2C>޸<EFBFBD>FTL_Format<61><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ⷽʽ,<2C><><EFBFBD><EFBFBD>FTL_USE_BAD_BLOCK_SEARCH<43><48>
//V1.3 20160530
//<2F>޸ĵ<DEB8>1bit ECC<43><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>ȡ2<C8A1>Σ<EFBFBD><CEA3><EFBFBD>ȷ<EFBFBD><C8B7>1bit <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Է<EFBFBD><D4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD><DEB8><EFBFBD><EFBFBD><EFBFBD>
//////////////////////////////////////////////////////////////////////////////////
/**
* ÿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>page<EFBFBD><EFBFBD>spare<EFBFBD><EFBFBD>,ǰ<EFBFBD>ĸ<EFBFBD><EFBFBD>ֽڵĺ<EFBFBD><EFBFBD><EFBFBD>:
* <EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>,<EFBFBD><EFBFBD>ʾ<EFBFBD>ÿ<EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>ǻ<EFBFBD><EFBFBD><EFBFBD>:0XFF,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ,<EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
* <EFBFBD>ڶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>,<EFBFBD><EFBFBD>ʾ<EFBFBD>ÿ<EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ù<EFBFBD>:0XFF,û<EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;0XCC,д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><EFBFBD>ĸ<EFBFBD><EFBFBD>ֽ<EFBFBD>,<EFBFBD><EFBFBD>ʾ<EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
* ÿ<EFBFBD><EFBFBD>page,spare<EFBFBD><EFBFBD>16<EFBFBD>ֽ<EFBFBD><EFBFBD>Ժ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽں<EFBFBD><EFBFBD><EFBFBD>:
* <EFBFBD><EFBFBD>ʮ<EFBFBD><EFBFBD><EFBFBD>ֽڿ<EFBFBD>ʼ,<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ4<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ洢һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>С:NAND_ECC_SECTOR_SIZE)<EFBFBD><EFBFBD>ECCֵ,<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ECCУ<EFBFBD><EFBFBD>
*/
/**
* @brief FTL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval 0,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʧ<EFBFBD><EFBFBD>
*/
uint8_t FTL_Init(void)
{
uint8_t temp;
if(NAND_Init())
return 1; //<2F><>ʼ<EFBFBD><CABC>NAND FLASH
// FTL_Format();
if(nand_dev.lut)
myfree(SRAMEX,nand_dev.lut);
nand_dev.lut=mymalloc(SRAMEX,(nand_dev.block_totalnum)*2); //<2F><>LUT<55><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>
memset(nand_dev.lut,0,nand_dev.block_totalnum*2); //ȫ<><C8AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if(!nand_dev.lut)
return 1; //<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7>
temp=FTL_CreateLUT(1);
if(temp)
{
printf("format nand flash...\r\n");
temp=FTL_Format(); //<2F><>ʽ<EFBFBD><CABD>NAND
if(temp)
{
printf("format failed!\r\n");
return 2;
}
}
else //<2F><><EFBFBD><EFBFBD>LUT<55><54><EFBFBD>ɹ<EFBFBD>
{
printf("total block num:%d\r\n",nand_dev.block_totalnum);
printf("good block num:%d\r\n",nand_dev.good_blocknum);
printf("valid block num:%d\r\n",nand_dev.valid_blocknum);
}
return 0;
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ijһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param blocknum:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD>Χ:0~(block_totalnum-1)
* @retval <EFBFBD><EFBFBD>
*/
void FTL_BadBlockMark(uint32_t blocknum)
{
uint32_t temp=0XAAAAAAAA;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>mark,<2C><><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>OK,ֻҪ<D6BB><D2AA><EFBFBD><EFBFBD>0XFF.<2E><><EFBFBD><EFBFBD>дǰ4<C7B0><34><EFBFBD>ֽ<EFBFBD>,<2C><><EFBFBD><EFBFBD>FTL_FindUnusedBlock<63><6B><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>黵<EFBFBD><E9BBB5>.(<28><><EFBFBD><EFBFBD><EFBFBD>鱸<EFBFBD><E9B1B8><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>)
NAND_WriteSpare(blocknum*nand_dev.block_pagenum,0,(uint8_t*)&temp,4); //<2F>ڵ<EFBFBD>һ<EFBFBD><D2BB>page<67><65>spare<72><65>,<2C><>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(ǰ4<C7B0><34><EFBFBD>ֽڶ<D6BD>д)
NAND_WriteSpare(blocknum*nand_dev.block_pagenum+1,0,(uint8_t*)&temp,4); //<2F>ڵڶ<DAB5><DAB6><EFBFBD>page<67><65>spare<72><65>,<2C><>һ<EFBFBD><D2BB><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ǰ4<C7B0><34><EFBFBD>ֽڶ<D6BD>д)
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ijһ<EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>ǻ<EFBFBD><EFBFBD><EFBFBD>
* @param blocknum:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD>Χ:0~(block_totalnum-1)
* @retval 0,<EFBFBD>ÿ<EFBFBD>;<EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*/
uint8_t FTL_CheckBadBlock(uint32_t blocknum)
{
uint8_t flag=0;
NAND_ReadSpare(blocknum*nand_dev.block_pagenum,0,&flag,1);//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־
if(flag==0XFF)//<2F>ÿ<EFBFBD>?,<2C><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
NAND_ReadSpare(blocknum*nand_dev.block_pagenum+1,0,&flag,1);//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־
if(flag==0XFF)return 0; //<2F>ÿ<EFBFBD>
else return 1; //<2F><><EFBFBD><EFBFBD>
}
return 2;
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ijһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD>ʹ<EFBFBD><EFBFBD>
* @param blocknum : <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD>Χ:0~(block_totalnum-1)
* @retval 0,<EFBFBD>ɹ<EFBFBD>;
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʧ<EFBFBD><EFBFBD>
*/
uint8_t FTL_UsedBlockMark(uint32_t blocknum)
{
uint8_t Usedflag=0XCC;
uint8_t temp=0;
temp=NAND_WriteSpare(blocknum*nand_dev.block_pagenum,1,(uint8_t*)&Usedflag,1);//д<><D0B4><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD><D1BE><EFBFBD>ʹ<EFBFBD>ñ<EFBFBD>־
return temp;
}
/**
* @brief <EFBFBD>Ӹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ鿪ʼ<EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>ҵ<EFBFBD>һ<EFBFBD><EFBFBD>δ<EFBFBD><EFBFBD>ʹ<EFBFBD>õĿ<EFBFBD>(ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/ż<EFBFBD><EFBFBD>)
* @param sblock : <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>,<EFBFBD><EFBFBD>Χ:0~(block_totalnum-1)
* @param flag : 0,ż<EFBFBD><EFBFBD><EFBFBD><EFBFBD>; 1,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
* @retval 0XFFFFFFFF,ʧ<EFBFBD><EFBFBD>;
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ,δʹ<EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD>
*/
uint32_t FTL_FindUnusedBlock(uint32_t sblock,uint8_t flag)
{
uint32_t temp=0;
uint32_t blocknum=0;
for(blocknum=sblock+1;blocknum>0;blocknum--)
{
if(((blocknum-1)%2)==flag)//<2F><>ż<EFBFBD>ϸ<EFBFBD>,<2C>ż<EFBFBD><C5BC><EFBFBD>
{
NAND_ReadSpare((blocknum-1)*nand_dev.block_pagenum,0,(uint8_t*)&temp,4);//<2F><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ʹ<EFBFBD>ñ<EFBFBD><C3B1><EFBFBD>
if(temp==0XFFFFFFFF)return(blocknum-1);//<2F>ҵ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD>տ<EFBFBD>,<2C><><EFBFBD>ؿ<EFBFBD><D8BF><EFBFBD><EFBFBD><EFBFBD>
}
}
return 0XFFFFFFFF; //δ<>ҵ<EFBFBD><D2B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬһ<EFBFBD><EFBFBD>plane<EFBFBD>ڵ<EFBFBD>δʹ<EFBFBD>õĿ<EFBFBD>
* @param sblock <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD><EFBFBD>Χ:0~(block_totalnum-1)
* @retval 0XFFFFFFFF,ʧ<EFBFBD><EFBFBD>;<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ,δʹ<EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD>
*/
uint32_t FTL_FindSamePlaneUnusedBlock(uint32_t sblock)
{
static uint32_t curblock=0XFFFFFFFF;
uint32_t unusedblock=0;
if(curblock>(nand_dev.block_totalnum-1))curblock=nand_dev.block_totalnum-1;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Χ<EFBFBD><CEA7>,ǿ<>ƴ<EFBFBD><C6B4><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>鿪ʼ
unusedblock=FTL_FindUnusedBlock(curblock,sblock%2); //<2F>ӵ<EFBFBD>ǰ<EFBFBD><C7B0>,<2C><>ʼ,<2C><>ǰ<EFBFBD><C7B0><EFBFBD>ҿ<EFBFBD><D2BF><EFBFBD><EFBFBD><EFBFBD>
if(unusedblock==0XFFFFFFFF&&curblock<(nand_dev.block_totalnum-1)) //δ<>ҵ<EFBFBD>,<2C>Ҳ<EFBFBD><D2B2>Ǵ<EFBFBD><C7B4><EFBFBD>ĩβ<C4A9><CEB2>ʼ<EFBFBD>ҵ<EFBFBD>
{
curblock=nand_dev.block_totalnum-1; //ǿ<>ƴ<EFBFBD><C6B4><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>鿪ʼ
unusedblock=FTL_FindUnusedBlock(curblock,sblock%2); //<2F><><EFBFBD><EFBFBD>ĩβ<C4A9><CEB2>ʼ,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
}
if(unusedblock==0XFFFFFFFF)return 0XFFFFFFFF; //<2F>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>block
curblock=unusedblock; //<2F><>ǰ<EFBFBD><C7B0><EFBFBD>ŵ<EFBFBD><C5B5><EFBFBD>δʹ<CEB4>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD>.<2E>´<EFBFBD><C2B4><EFBFBD><EFBFBD>Ӵ˴<D3B4><CBB4><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>
return unusedblock; //<2F><><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><D2B5>Ŀ<EFBFBD><C4BF><EFBFBD>block
}
/**
* @brief <EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD>ҿ<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param Source_PageNo : Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>ҳ<EFBFBD><EFBFBD>ַ,<EFBFBD><EFBFBD>Χ:0~(block_pagenum*block_totalnum-1)
* @param ColNum : Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD>ʼ<EFBFBD><EFBFBD>ַ(Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD>ڵ<EFBFBD>ַ),<EFBFBD><EFBFBD>Χ:0~(page_totalsize-1)
* @param pBuffer : Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param NumByteToWrite: Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD>ܳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
* @retval 0,<EFBFBD>ɹ<EFBFBD>;
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʧ<EFBFBD><EFBFBD>
*/
uint8_t FTL_CopyAndWriteToBlock(uint32_t Source_PageNum,uint16_t ColNum,uint8_t *pBuffer,uint32_t NumByteToWrite)
{
uint16_t i=0,temp=0,wrlen;
uint32_t source_block=0,pageoffset=0;
uint32_t unusedblock=0;
source_block=Source_PageNum/nand_dev.block_pagenum; //<2F><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD>ڵĿ<DAB5><C4BF><EFBFBD>
pageoffset=Source_PageNum%nand_dev.block_pagenum; //<2F><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><DABF>ڵ<EFBFBD>ƫ<EFBFBD><C6AB>
retry:
unusedblock=FTL_FindSamePlaneUnusedBlock(source_block);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>plane<6E><65>δʹ<CEB4>ÿ<EFBFBD>
if(unusedblock>nand_dev.block_totalnum)return 1; //<2F><><EFBFBD>ҵ<EFBFBD><D2B5>Ŀ<EFBFBD><C4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŵ<EFBFBD><C5B4>ڿ<EFBFBD><DABF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB>϶<EFBFBD><CFB6>dz<EFBFBD><C7B3><EFBFBD><EFBFBD><EFBFBD>
for(i=0;i<nand_dev.block_pagenum;i++) //<2F><>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD><DDB8>Ƶ<EFBFBD><C6B5>ҵ<EFBFBD><D2B5><EFBFBD>δʹ<CEB4>ÿ<EFBFBD><C3BF><EFBFBD>
{
if(i>=pageoffset&&NumByteToWrite) //<2F><><EFBFBD><EFBFBD>Ҫд<D2AA>뵽<EFBFBD><EBB5BD>ǰҳ
{
if(NumByteToWrite>(nand_dev.page_mainsize-ColNum))//Ҫд<D2AA><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD>ǰҳ<C7B0><D2B3>ʣ<EFBFBD><CAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
wrlen=nand_dev.page_mainsize-ColNum; //д<>볤<EFBFBD>ȵ<EFBFBD><C8B5>ڵ<EFBFBD>ǰҳʣ<D2B3><CAA3><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD>
}else wrlen=NumByteToWrite; //д<><D0B4>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
temp=NAND_CopyPageWithWrite(source_block*nand_dev.block_pagenum+i,unusedblock*nand_dev.block_pagenum+i,ColNum,pBuffer,wrlen);
ColNum=0; //<2F>е<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>
pBuffer+=wrlen; //д<><D0B4>ַƫ<D6B7><C6AB>
NumByteToWrite-=wrlen; //д<><D0B4><EFBFBD><EFBFBD><EFBFBD>ݼ<EFBFBD><DDBC><EFBFBD>
}else //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4>,ֱ<>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
temp=NAND_CopyPageWithoutWrite(source_block*nand_dev.block_pagenum+i,unusedblock*nand_dev.block_pagenum+i);
}
if(temp) //<2F><><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD>鴦<EFBFBD><E9B4A6>
{
FTL_BadBlockMark(unusedblock); //<2F><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
FTL_CreateLUT(1); //<2F>ؽ<EFBFBD>LUT<55><54>
goto retry;
}
}
if(i==nand_dev.block_pagenum) //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
{
FTL_UsedBlockMark(unusedblock); //<2F><><EFBFBD>ǿ<EFBFBD><C7BF>Ѿ<EFBFBD>ʹ<EFBFBD><CAB9>
NAND_EraseBlock(source_block); //<2F><><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4>
//printf("\r\ncopy block %d to block %d\r\n",source_block,unusedblock);//<2F><>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
for(i=0;i<nand_dev.block_totalnum;i++) //<2F><><EFBFBD><EFBFBD>LUT<55><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD>unusedblock<63>滻source_block
{
if(nand_dev.lut[i]==source_block)
{
nand_dev.lut[i]=unusedblock;
break;
}
}
}
return 0; //<2F>ɹ<EFBFBD>
}
/**
* @brief <EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param LBNNum : <EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*/
uint16_t FTL_LBNToPBN(uint32_t LBNNum)
{
uint16_t PBNNo=0;
//<2F><><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD>Ŵ<EFBFBD><C5B4><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>򷵻<EFBFBD>0XFFFF
if(LBNNum>nand_dev.valid_blocknum)return 0XFFFF;
PBNNo=nand_dev.lut[LBNNum];
return PBNNo;
}
/**
* @brief д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>(֧<EFBFBD>ֶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д)<EFBFBD><EFBFBD>FATFS<EFBFBD>ļ<EFBFBD>ϵͳʹ<EFBFBD><EFBFBD>
* @param pBuffer : Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param SectorNo : <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param SectorSize : <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С(<EFBFBD><EFBFBD><EFBFBD>ܴ<EFBFBD><EFBFBD><EFBFBD>NAND_ECC_SECTOR_SIZE<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD>С,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>!!)
* @param SectorCount : Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @retval 0,<EFBFBD>ɹ<EFBFBD>;
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʧ<EFBFBD><EFBFBD>
*/
uint8_t FTL_WriteSectors(uint8_t *pBuffer,uint32_t SectorNo,uint16_t SectorSize,uint32_t SectorCount)
{
uint8_t flag=0;
uint16_t temp;
uint32_t i=0;
uint16_t wsecs; //дҳ<D0B4><D2B3>С
uint32_t wlen; //д<>볤<EFBFBD><EBB3A4>
uint32_t LBNNo; //<2F>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>
uint32_t PBNNo; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
uint32_t PhyPageNo; //<2F><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>
uint32_t PageOffset; //ҳ<><D2B3>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
uint32_t BlockOffset;//<2F><><EFBFBD><EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
uint32_t markdpbn=0XFFFFFFFF; //<2F><><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
for(i=0;i<SectorCount;i++)
{
LBNNo=(SectorNo+i)/(nand_dev.block_pagenum*(nand_dev.page_mainsize/SectorSize));//<2F><><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD><C5BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>
PBNNo=FTL_LBNToPBN(LBNNo); //<2F><><EFBFBD>߼<EFBFBD><DFBC><EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if(PBNNo>=nand_dev.block_totalnum)return 1; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŵ<EFBFBD><C5B4><EFBFBD>NAND FLASH<53><48><EFBFBD>ܿ<EFBFBD><DCBF><EFBFBD>,<2C><>ʧ<EFBFBD><CAA7>.
BlockOffset=((SectorNo+i)%(nand_dev.block_pagenum*(nand_dev.page_mainsize/SectorSize)))*SectorSize;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB>
PhyPageNo=PBNNo*nand_dev.block_pagenum+BlockOffset/nand_dev.page_mainsize; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>
PageOffset=BlockOffset%nand_dev.page_mainsize; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
temp=nand_dev.page_mainsize-PageOffset; //page<67><65>ʣ<EFBFBD><CAA3><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
temp/=SectorSize; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>sector<6F><72>
wsecs=SectorCount-i; //<2F><>ʣ<EFBFBD><CAA3><EFBFBD>ٸ<EFBFBD>sectorҪд
if(wsecs>=temp)wsecs=temp; //<2F><><EFBFBD>ڿ<EFBFBD><DABF><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>sector<6F><72>,<2C><>д<EFBFBD><D0B4>temp<6D><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
wlen=wsecs*SectorSize; //ÿ<><C3BF>дwsecs<63><73>sector
//<2F><><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6>Ƿ<EFBFBD>ȫΪ0XFF
flag=NAND_ReadPageComp(PhyPageNo,PageOffset,0XFFFFFFFF,wlen/4,&temp); //<2F><>һ<EFBFBD><D2BB>wlen/4<><34>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD>0XFFFFFFFF<46>Ա<EFBFBD>
if(flag)return 2; //<2F><>д<EFBFBD><D0B4><EFBFBD>󣬻<EFBFBD><F3A3ACBB><EFBFBD>
if(temp==(wlen/4)) flag=NAND_WritePage(PhyPageNo,PageOffset,pBuffer,wlen); //ȫΪ0XFF,<2C><><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
else flag=1; //<2F><>ȫ<EFBFBD><C8AB>0XFF,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if(flag==0&&(markdpbn!=PBNNo)) //ȫ<><C8AB>0XFF,<2C><>д<EFBFBD><D0B4><EFBFBD>ɹ<EFBFBD>,<2C>ұ<EFBFBD><D2B1><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뵱ǰ<EBB5B1><C7B0><EFBFBD><EFBFBD><EFBFBD>鲻ͬ
{
flag=FTL_UsedBlockMark(PBNNo); //<2F><><EFBFBD>Ǵ˿<C7B4><CBBF>Ѿ<EFBFBD>ʹ<EFBFBD><CAB9>
markdpbn=PBNNo; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD>ǿ<EFBFBD>=<3D><>ǰ<EFBFBD><C7B0>,<2C><>ֹ<EFBFBD>ظ<EFBFBD><D8B8><EFBFBD><EFBFBD><EFBFBD>
}
if(flag)//<2F><>ȫΪ0XFF/<2F><><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><DCA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>
{
temp=((uint32_t)nand_dev.block_pagenum*nand_dev.page_mainsize-BlockOffset)/SectorSize;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>block<63><6B>ʣ<EFBFBD><EFBFBD><C2B6>ٸ<EFBFBD>SECTOR<4F><52><EFBFBD><EFBFBD>д<EFBFBD><D0B4>
wsecs=SectorCount-i; //<2F><>ʣ<EFBFBD><CAA3><EFBFBD>ٸ<EFBFBD>sectorҪд
if(wsecs>=temp)wsecs=temp; //<2F><><EFBFBD>ڿ<EFBFBD><DABF><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>sector<6F><72>,<2C><>д<EFBFBD><D0B4>temp<6D><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
wlen=wsecs*SectorSize; //ÿ<><C3BF>дwsecs<63><73>sector
flag=FTL_CopyAndWriteToBlock(PhyPageNo,PageOffset,pBuffer,wlen);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>block,<2C><>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if(flag)return 3;//ʧ<><CAA7>
}
i+=wsecs-1;
pBuffer+=wlen;//<2F><><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>ƫ<EFBFBD><C6AB>
}
return 0;
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(֧<EFBFBD>ֶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)<EFBFBD><EFBFBD>FATFS<EFBFBD>ļ<EFBFBD>ϵͳʹ<EFBFBD><EFBFBD>
* @param pBuffer : <EFBFBD><EFBFBD><EFBFBD>ݻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param SectorNo : <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param SectorSize : <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
* @param SectorCount : Ҫд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @retval 0,<EFBFBD>ɹ<EFBFBD>;
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʧ<EFBFBD><EFBFBD>
*/
uint8_t FTL_ReadSectors(uint8_t *pBuffer,uint32_t SectorNo,uint16_t SectorSize,uint32_t SectorCount)
{
uint8_t flag=0;
uint16_t rsecs; //<2F><><EFBFBD>ζ<EFBFBD>ȡҳ<C8A1><D2B3>
uint32_t i=0;
uint32_t LBNNo; //<2F>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>
uint32_t PBNNo; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
uint32_t PhyPageNo; //<2F><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>
uint32_t PageOffset; //ҳ<><D2B3>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
uint32_t BlockOffset;//<2F><><EFBFBD><EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
for(i=0;i<SectorCount;i++)
{
LBNNo=(SectorNo+i)/(nand_dev.block_pagenum*(nand_dev.page_mainsize/SectorSize));//<2F><><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD><C5BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>
PBNNo=FTL_LBNToPBN(LBNNo); //<2F><><EFBFBD>߼<EFBFBD><DFBC><EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if(PBNNo>=nand_dev.block_totalnum)return 1; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŵ<EFBFBD><C5B4><EFBFBD>NAND FLASH<53><48><EFBFBD>ܿ<EFBFBD><DCBF><EFBFBD>,<2C><>ʧ<EFBFBD><CAA7>.
BlockOffset=((SectorNo+i)%(nand_dev.block_pagenum*(nand_dev.page_mainsize/SectorSize)))*SectorSize;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB>
PhyPageNo=PBNNo*nand_dev.block_pagenum+BlockOffset/nand_dev.page_mainsize; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>
PageOffset=BlockOffset%nand_dev.page_mainsize; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
rsecs=(nand_dev.page_mainsize-PageOffset)/SectorSize; //<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ҳ
if(rsecs>(SectorCount-i))rsecs=SectorCount-i; //<2F><><EFBFBD>಻<EFBFBD>ܳ<EFBFBD><DCB3><EFBFBD>SectorCount-i
flag=NAND_ReadPage(PhyPageNo,PageOffset,pBuffer,rsecs*SectorSize); //<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
if(flag==NSTA_ECC1BITERR) //<2F><><EFBFBD><EFBFBD>1bit ecc<63><63><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
{
flag=NAND_ReadPage(PhyPageNo,PageOffset,pBuffer,rsecs*SectorSize); //<2F>ض<EFBFBD><D8B6><EFBFBD><EFBFBD><EFBFBD>,<2C>ٴ<EFBFBD>ȷ<EFBFBD><C8B7>
if(flag==NSTA_ECC1BITERR)
{
FTL_CopyAndWriteToBlock(PhyPageNo,PageOffset,pBuffer,rsecs*SectorSize); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
flag=FTL_BlockCompare(PhyPageNo/nand_dev.block_pagenum,0XFFFFFFFF); //ȫ1<C8AB><31><EFBFBD><EFBFBD>,ȷ<><C8B7><EFBFBD>Ƿ<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
if(flag==0)
{
flag=FTL_BlockCompare(PhyPageNo/nand_dev.block_pagenum,0X00); //ȫ0<C8AB><30><EFBFBD><EFBFBD>,ȷ<><C8B7><EFBFBD>Ƿ<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
NAND_EraseBlock(PhyPageNo/nand_dev.block_pagenum); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɺ<EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
if(flag) //ȫ0/ȫ1<C8AB><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C>϶<EFBFBD><CFB6>ǻ<EFBFBD><C7BB><EFBFBD><EFBFBD><EFBFBD>.
{
FTL_BadBlockMark(PhyPageNo/nand_dev.block_pagenum); //<2F><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
FTL_CreateLUT(1); //<2F>ؽ<EFBFBD>LUT<55><54>
}
flag=0;
}
}
if(flag==NSTA_ECC2BITERR)flag=0; //2bit ecc<63><63><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<28><><EFBFBD><EFBFBD><EFBFBD>dz<EFBFBD><C7B3><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD><DDB5>µ<EFBFBD>)
if(flag)return 2; //ʧ<><CAA7>
pBuffer+=SectorSize*rsecs; //<2F><><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>ƫ<EFBFBD><C6AB>
i+=rsecs-1;
}
return 0;
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD>´<EFBFBD><EFBFBD><EFBFBD>LUT<EFBFBD><EFBFBD>
* @param mode:0,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @retval 1,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҲҪ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
* @retval 0,<EFBFBD>ɹ<EFBFBD>;<EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʧ<EFBFBD><EFBFBD>
*/
uint8_t FTL_CreateLUT(uint8_t mode)
{
uint32_t i;
uint8_t buf[4]={0x0,0,0,0};
uint32_t LBNnum=0; //<2F>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>
for(i=0;i<nand_dev.block_totalnum;i++) //<2F><>λLUT<55><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>Ϊ<EFBFBD><CEAA>Чֵ<D0A7><D6B5>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD>0XFFFF
{
nand_dev.lut[i]=0XFFFF;
}
nand_dev.good_blocknum=0;
for(i=0;i<nand_dev.block_totalnum;i++)
{
NAND_ReadSpare(i*nand_dev.block_pagenum,0,buf,4); //<2F><>ȡ4<C8A1><34><EFBFBD>ֽ<EFBFBD>
if(buf[0]==0XFF&&mode)
NAND_ReadSpare(i*nand_dev.block_pagenum+1,0,buf,1);//<2F>ÿ<EFBFBD>,<2C><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>2<EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if(buf[0]==0XFF)//<2F>Ǻÿ<C7BA>
{
LBNnum=((uint16_t)buf[3]<<8)+buf[2]; //<2F>õ<EFBFBD><C3B5>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if(LBNnum<nand_dev.block_totalnum) //<2F>߼<EFBFBD><DFBC><EFBFBD><EFBFBD>ſ϶<C5BF>С<EFBFBD><D0A1><EFBFBD>ܵĿ<DCB5><C4BF><EFBFBD><EFBFBD><EFBFBD>
{
nand_dev.lut[LBNnum]=i; //<2F><><EFBFBD><EFBFBD>LUT<55><54><EFBFBD><EFBFBD>дLBNnum<75><6D>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
nand_dev.good_blocknum++;
}
else printf("bad block index:%d\r\n",i);
}
//LUT<55><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ժ<EFBFBD><D4BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
for(i=0;i<nand_dev.block_totalnum;i++)
{
if(nand_dev.lut[i]>=nand_dev.block_totalnum)
{
nand_dev.valid_blocknum=i;
break;
}
}
if(nand_dev.valid_blocknum<100)return 2; //<2F><>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD>С<EFBFBD><D0A1>100,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.<2E><>Ҫ<EFBFBD><D2AA><EFBFBD>¸<EFBFBD>ʽ<EFBFBD><CABD>
return 0; //LUT<55><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
/**
* @brief FTL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Block<EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݶԱ<EFBFBD>
* @param blockx : block<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param cmpval : Ҫ<EFBFBD><EFBFBD>֮<EFBFBD>Աȵ<EFBFBD>ֵ
* @retval 0,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD>,ȫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
1,<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD>,<EFBFBD>в<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*/
uint8_t FTL_BlockCompare(uint32_t blockx,uint32_t cmpval)
{
uint8_t res;
uint16_t i,j,k;
for(i=0;i<3;i++)//<2F><><EFBFBD><EFBFBD>3<EFBFBD>λ<EFBFBD><CEBB><EFBFBD>
{
for(j=0;j<nand_dev.block_pagenum;j++)
{
NAND_ReadPageComp(blockx*nand_dev.block_pagenum,0,cmpval,nand_dev.page_mainsize/4,&k);//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>page,<2C><><EFBFBD><EFBFBD>0XFFFFFFFF<46>Ա<EFBFBD>
if(k!=(nand_dev.page_mainsize/4))break;
}
if(j==nand_dev.block_pagenum)return 0; //<2F><><EFBFBD><EFBFBD><EFBFBD>ϸ<EFBFBD>,ֱ<><D6B1><EFBFBD>˳<EFBFBD>
res=NAND_EraseBlock(blockx);
if(res)printf("error erase block:%d\r\n",i);
else
{
if(cmpval!=0XFFFFFFFF)//<2F><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>ȫ1,<2C><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
{
for(k=0;k<nand_dev.block_pagenum;k++)
{
NAND_WritePageConst(blockx*nand_dev.block_pagenum+k,0,0,nand_dev.page_mainsize/4);//дPAGE
}
}
}
}
printf("bad block checked:%d\r\n",blockx);
return 1;
}
/**
* @brief FTL<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѱ<EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><EFBFBD><EFBFBD>,ʹ<EFBFBD><EFBFBD>:<EFBFBD><EFBFBD>-д-<EFBFBD><EFBFBD> <EFBFBD><EFBFBD>ʽ
* @note 512M<EFBFBD><EFBFBD>NAND ,<EFBFBD><EFBFBD>ҪԼ3<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɼ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>RGB<EFBFBD><EFBFBD>,<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>дNAND,<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*/
uint32_t FTL_SearchBadBlock(void)
{
uint8_t *blktbl;
uint8_t res;
uint32_t i,j;
uint32_t goodblock=0;
blktbl=mymalloc(SRAMEX,nand_dev.block_totalnum);//<2F><><EFBFBD><EFBFBD>block<63><6B><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>,<2C><>Ӧ<EFBFBD><D3A6>:0,<2C>ÿ<EFBFBD>;1,<2C><><EFBFBD><EFBFBD>;
NAND_EraseChip(); //ȫƬ<C8AB><C6AC><EFBFBD><EFBFBD>
for(i=0;i<nand_dev.block_totalnum;i++) //<2F><>һ<EFBFBD>׶μ<D7B6><CEBC><EFBFBD>,<2C><><EFBFBD><EFBFBD>ȫ1
{
res=FTL_BlockCompare(i,0XFFFFFFFF); //ȫ1<C8AB><31><EFBFBD><EFBFBD>
if(res)blktbl[i]=1; //<2F><><EFBFBD><EFBFBD>
else
{
blktbl[i]=0; //<2F>ÿ<EFBFBD>
for(j=0;j<nand_dev.block_pagenum;j++)//дblockΪȫ0,Ϊ<><CEAA><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>׼<EFBFBD><D7BC>
{
NAND_WritePageConst(i*nand_dev.block_pagenum+j,0,0,nand_dev.page_mainsize/4);
}
}
}
for(i=0;i<nand_dev.block_totalnum;i++) //<2F>ڶ<EFBFBD><DAB6>׶μ<D7B6><CEBC><EFBFBD>,<2C><><EFBFBD><EFBFBD>ȫ0
{
if(blktbl[i]==0) //<2F>ڵ<EFBFBD>һ<EFBFBD>׶<EFBFBD>,û<>б<EFBFBD><D0B1><EFBFBD><EFBFBD>ǻ<EFBFBD><C7BB><EFBFBD><EFBFBD><EFBFBD>,<2C>ſ<EFBFBD><C5BF><EFBFBD><EFBFBD>Ǻÿ<C7BA>
{
res=FTL_BlockCompare(i,0); //ȫ0<C8AB><30><EFBFBD><EFBFBD>
if(res)blktbl[i]=1; //<2F><><EFBFBD>ǻ<EFBFBD><C7BB><EFBFBD>
else goodblock++;
}
}
NAND_EraseChip(); //ȫƬ<C8AB><C6AC><EFBFBD><EFBFBD>
for(i=0;i<nand_dev.block_totalnum;i++) //<2F><><EFBFBD><EFBFBD><EFBFBD>׶μ<D7B6><CEBC><EFBFBD>,<2C><><EFBFBD>ǻ<EFBFBD><C7BB><EFBFBD>
{
if(blktbl[i])FTL_BadBlockMark(i); //<2F>ǻ<EFBFBD><C7BB><EFBFBD>
}
return goodblock; //<2F><><EFBFBD>غÿ<D8BA><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
/**
* @brief <EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>NAND <EFBFBD>ؽ<EFBFBD>LUT<EFBFBD><EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval 0,<EFBFBD>ɹ<EFBFBD>;
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ʧ<EFBFBD><EFBFBD>
*/
uint8_t FTL_Format(void)
{
uint8_t temp;
uint32_t i,n;
uint32_t goodblock=0;
nand_dev.good_blocknum=0;
#if FTL_USE_BAD_BLOCK_SEARCH==1 //ʹ<>ò<EFBFBD>-д-<2D><><EFBFBD>ķ<EFBFBD>ʽ,<2C><><EFBFBD>⻵<EFBFBD><E2BBB5>
nand_dev.good_blocknum=FTL_SearchBadBlock();//<2F><>Ѱ<EFBFBD><D1B0><EFBFBD><EFBFBD>.<2E><>ʱ<EFBFBD>ܾ<EFBFBD>
#else //ֱ<><D6B1>ʹ<EFBFBD><CAB9>NAND FLASH<53>ij<EFBFBD><C4B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־(<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,Ĭ<><C4AC><EFBFBD>Ǻÿ<C7BA>)
for(i=0;i<nand_dev.block_totalnum;i++)
{
temp=FTL_CheckBadBlock(i); //<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
if(temp==0) //<2F>ÿ<EFBFBD>
{
temp=NAND_EraseBlock(i);
if(temp) //<2F><><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7>,<2C><>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
{
printf("Bad block:%d\r\n",i);
FTL_BadBlockMark(i); //<2F><><EFBFBD><EFBFBD><EFBFBD>ǻ<EFBFBD><C7BB><EFBFBD>
}else nand_dev.good_blocknum++; //<2F>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ
}
}
#endif
printf("good_blocknum:%d\r\n",nand_dev.good_blocknum);
if(nand_dev.good_blocknum<100) return 1; //<2F><><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>100<30><30><EFBFBD><EFBFBD>NAND Flash<73><68><EFBFBD><EFBFBD>
goodblock=(nand_dev.good_blocknum*93)/100; //%93<39>ĺÿ<C4BA><C3BF><EFBFBD><EFBFBD>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD>
n=0;
for(i=0;i<nand_dev.block_totalnum;i++) //<2F>ںÿ<DABA><C3BF>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD>Ϣ
{
temp=FTL_CheckBadBlock(i); //<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
if(temp==0) //<2F>ÿ<EFBFBD>
{
NAND_WriteSpare(i*nand_dev.block_pagenum,2,(uint8_t*)&n,2);//д<><D0B4><EFBFBD>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
n++; //<2F>߼<EFBFBD><DFBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ż<EFBFBD>1
if(n==goodblock) break; //ȫ<><C8AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
}
if(FTL_CreateLUT(1))return 2; //<2F>ؽ<EFBFBD>LUT<55><54>ʧ<EFBFBD><CAA7>
return 0;
}
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