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/*
driver for K9K8G08U0A
use addr lines as ale cle r/b signels :
ale--BA29
cle--BA30
r/b--PA15
row 13bit --block
6bit --page
col 1bit --spare
2bit --sector
9bit --offset(512byte)
block0 info
block 1~4096 data
block 4097~8191 for replace bad block
ecc save in spare area byte 1-3 (byte 0 is bad block mark)
我们提供了
虚拟块号写函数 nand_write_vblock ：由vblock块的头开始写len长度（len<=64*2048）且该块将被整块覆盖
虚拟块号读函数 nand_read_vblock ：由vblock块的头开始读len长度（len<=64*2048）
虚拟地址读函数 nand_read_vaddr ：由虚拟地址vaddr（0~0x1FFFFFFF）读len长度（vaddr+len<=0x20000000）
虚拟块号到虚拟地址转化函数 nand_vblocknum2vaddr :
由于要写的块都要先擦除，所以仅提供了以虚拟块号为参数的写函数，而没有提供以虚拟地址为参数的写函数，
为方便起见，提供了 虚拟块号到虚拟地址转化函数 和 虚拟地址到虚拟块号转化函数
*/
/*
09.6.30 检测busy管脚添加超时退出
*/
#pragma pack(1)
#include "vxWorks.h"
#define TIMEOUT_LOOP 99999 /*待测*/
#define DEBUG
#ifdef DEBUG
#define DEBUG_READ 0x00000001
#define DEBUG_ERROR 0x00000002
#define DEBUG_PROGRAM 0x00000004
#define DEBUG_ERASE 0x00000008
#define DEBUG_ID 0x00000010
#define DEBUG_MAP 0x00000020
#define DEBUG_ECC 0x00000040
#define DEBUG_ADDR 0x00000080
#define DEBUG_BLKCHK 0x00000100
#define DEBUG_ALWAYS 0xffffffff
LOCAL UINT32 debug = DEBUG_READ | DEBUG_BLKCHK | DEBUG_ERASE;
#define DEBUG_PRINT(mask, string) \
if ((debug & mask) || (mask == DEBUG_ALWAYS)) \
printf string
#else
#define DEBUG_PRINT(mask, string)
#endif
#define NAND_CMD 0x50000002
#define NAND_ADDR 0x50000004
#define PAPAR *((volatile UINT32*)0xf0010D06)
#define PADIR *((volatile UINT32*)0xf0010D02)
#define PADAT *((volatile UINT32*)0xf0010D10)
#define PA15 0x00010000
typedef struct
{
UCHAR checked;
UCHAR badBlockTable[8192];
union
{
UINT16 map_short[4096];
UCHAR map_char[8192];
}map;
UCHAR bottomHaltInValid[4095];
}NAND_INFO;
LOCAL NAND_INFO nand_info;
typedef enum {
ECC_NO_ERROR = 0, /* no error */
ECC_CORRECTABLE_ERROR = 1, /* one bit data error */
ECC_ECC_ERROR = 2, /* one bit ECC error */
ECC_UNCORRECTABLE_ERROR = 3 /* uncorrectable error */
} eccdiff_t;
LOCAL void make_ecc_512(unsigned char * ecc_buf, unsigned char * data_buf);
LOCAL eccdiff_t compare_ecc_512(unsigned char *iEccdata1, unsigned char *iEccdata2,
unsigned char *pPagedata, long * pOffset, unsigned char * pCorrected);
LOCAL BOOL isBusy();
LOCAL void set_command(UCHAR cmd);
LOCAL void set_addr(UCHAR addr);
LOCAL UCHAR nand_read(void);
LOCAL void nand_write(UCHAR c);
LOCAL UINT32 make_addr(UINT32 blocknum,UINT32 page,UINT32 sector,UINT32 offset,int flag);
LOCAL int set_data_addr(UINT32 addr,int flag);
int nand_erase(UINT32 blocknum);
LOCAL int nand_program_block(UCHAR* src,UINT32 blocknum,UINT32 len);
LOCAL int nand_program_sector(UCHAR* src,UINT32 blocknum,UINT32 page,UINT32 sector);
BOOL isChecked();
LOCAL void reset_nand();
LOCAL void initalBadBlockCheck();
LOCAL int read_id();
LOCAL int nand_read_sector(UCHAR* buf,UINT32 blocknum,UINT32 page,UINT32 sector);
LOCAL int load_info();
LOCAL int program_info();
LOCAL int nand_read_block0(UCHAR* buf,UINT32 len);
LOCAL int wait();
void nand_init();/*初始化*/
int nand_write_vblock(UINT32 vblocknum,UCHAR* buf,UINT32 len);/*vblocknum: 0~4095*//*虚拟块号写函数*/
int nand_read_vblock(UINT32 vblocknum,UCHAR* buf,UINT32 len);/*vblocknum: 0~4095*//*虚拟块号读函数*/
int nand_read_vaddr(UINT32 vaddr,UCHAR* buf,UINT32 len);/*vaddr : 0~0x1FFFFFFF*//*虚拟地址读函数*/
int nand_vblocknum2vaddr(UINT32 vblocknum,UINT32* pvaddr);/*虚拟块号到虚拟地址转化函数*/
int nand_vaddr2vblocknum(UINT32 vaddr,UINT32 * pvblock,UINT32 * poffset);/*虚拟地址到虚拟块号转化函数,poffset为块内偏移量*/
int nand_vblocknum2vaddr(UINT32 vblocknum,UINT32* pvaddr)
{
if(vblocknum>4095)
{
printf("error : vblocknum>4095\n");
return -1;
}
else
{
* pvaddr = (vblocknum<<17);
return 0;
}
}
int nand_vaddr2vblocknum(UINT32 vaddr,UINT32 * pvblock,UINT32 * poffset)
{
if(vaddr>0x1FFFFFFF)
{
printf("error : vaddr>0x1FFFFFFF\n");
return -1;
}
else
{
*pvblock = (vaddr & 0x1FFE0000)>>17;
*poffset = (vaddr & 0x1FFFF);
return 0;
}
}
LOCAL void make_ecc_512(unsigned char * ecc_buf, unsigned char * data_buf)
{
unsigned long i, ALIGN_FACTOR;
unsigned long tmp;
unsigned long uiparity = 0;
unsigned long parityCol, ecc = 0;
unsigned long parityCol4321 = 0, parityCol4343 = 0, parityCol4242 = 0, parityColTot = 0;
unsigned long *Data;
unsigned long Xorbit=0;
ALIGN_FACTOR = (unsigned long)data_buf % 4 ;
Data = (unsigned long *)(data_buf + ALIGN_FACTOR);
for( i = 0; i < 16; i++)
{
parityCol = *Data++;
tmp = *Data++; parityCol ^= tmp; parityCol4242 ^= tmp;
tmp = *Data++; parityCol ^= tmp; parityCol4343 ^= tmp;
tmp = *Data++; parityCol ^= tmp; parityCol4343 ^= tmp; parityCol4242 ^= tmp;
tmp = *Data++; parityCol ^= tmp; parityCol4321 ^= tmp;
tmp = *Data++; parityCol ^= tmp; parityCol4242 ^= tmp; parityCol4321 ^= tmp;
tmp = *Data++; parityCol ^= tmp; parityCol4343 ^= tmp; parityCol4321 ^= tmp;
tmp = *Data++; parityCol ^= tmp; parityCol4242 ^= tmp; parityCol4343 ^= tmp; parityCol4321 ^= tmp;
parityColTot ^= parityCol;
tmp = (parityCol >> 16) ^ parityCol;
tmp = (tmp >> 8) ^ tmp;
tmp = (tmp >> 4) ^ tmp;
tmp = ((tmp >> 2) ^ tmp) & 0x03;
if ((tmp == 0x01) || (tmp == 0x02))
{
uiparity ^= i;
Xorbit ^= 0x01;
}
}
tmp = (parityCol4321 >> 16) ^ parityCol4321;
tmp = (tmp << 8) ^ tmp;
tmp = (tmp >> 4) ^ tmp;
tmp = (tmp >> 2) ^ tmp;
ecc |= ((tmp << 1) ^ tmp) & 0x200;
tmp = (parityCol4343 >> 16) ^ parityCol4343;
tmp = (tmp >> 8) ^ tmp;
tmp = (tmp << 4) ^ tmp;
tmp = (tmp << 2) ^ tmp;
ecc |= ((tmp << 1) ^ tmp) & 0x80;
tmp = (parityCol4242 >> 16) ^ parityCol4242;
tmp = (tmp >> 8) ^ tmp;
tmp = (tmp << 4) ^ tmp;
tmp = (tmp >> 2) ^ tmp;
ecc |= ((tmp << 1) ^ tmp) & 0x20;
tmp = parityColTot & 0xFFFF0000;
tmp = tmp >> 16;
tmp = (tmp >> 8) ^ tmp;
tmp = (tmp >> 4) ^ tmp;
tmp = (tmp << 2) ^ tmp;
ecc |= ((tmp << 1) ^ tmp) & 0x08;
tmp = parityColTot & 0xFF00FF00;
tmp = (tmp >> 16) ^ tmp;
tmp = (tmp >> 8);
tmp = (tmp >> 4) ^ tmp;
tmp = (tmp >> 2) ^ tmp;
ecc |= ((tmp << 1) ^ tmp) & 0x02;
tmp = parityColTot & 0xF0F0F0F0 ;
tmp = (tmp << 16) ^ tmp;
tmp = (tmp >> 8) ^ tmp;
tmp = (tmp << 2) ^ tmp;
ecc |= ((tmp << 1) ^ tmp) & 0x800000;
tmp = parityColTot & 0xCCCCCCCC ;
tmp = (tmp << 16) ^ tmp;
tmp = (tmp >> 8) ^ tmp;
tmp = (tmp << 4) ^ tmp;
tmp = (tmp >> 2);
ecc |= ((tmp << 1) ^ tmp) & 0x200000;
tmp = parityColTot & 0xAAAAAAAA ;
tmp = (tmp << 16) ^ tmp;
tmp = (tmp >> 8) ^ tmp;
tmp = (tmp >> 4) ^ tmp;
tmp = (tmp << 2) ^ tmp;
ecc |= (tmp & 0x80000);
ecc |= (uiparity & 0x01) <<11;
ecc |= (uiparity & 0x02) <<12;
ecc |= (uiparity & 0x04) <<13;
ecc |= (uiparity & 0x08) <<14;
if (Xorbit)
{
ecc |= (ecc ^ 0x00AAAAAA)>>1;
}
else
{
ecc |= (ecc >> 1);
}
ecc = ~ecc;
*(ecc_buf + 2) = (unsigned char) (ecc >> 16);
*(ecc_buf + 1) = (unsigned char) (ecc >> 8);
*(ecc_buf + 0) = (unsigned char) (ecc);
}
/****************************************************************************
* NAME compare_ecc_512
* DESCRIPTION
* This function compares two ECCs and indicates if there is an error.
* PARAMETERS
* ecc_data1 one ECC to be compared
* ecc_data2 the other ECC to be compared
* page_data content of data page
* offset where the error occurred
* corrected correct data
* RETURN VALUES
* Upon successful completion, compare_ecc returns SSR_SUCCESS.
* Otherwise, corresponding error code is returned.
****/
LOCAL eccdiff_t compare_ecc_512(unsigned char *iEccdata1, unsigned char *iEccdata2,
unsigned char *pPagedata, long* pOffset, unsigned char* pCorrected)
{
unsigned long iCompecc = 0, iEccsum = 0;
unsigned long iFindbyte = 0;
unsigned long iIndex;
unsigned long nT1 = 0, nT2 =0;
unsigned char iNewvalue;
unsigned char iFindbit = 0;
unsigned char *pEcc1 = (unsigned char *)iEccdata1;
unsigned char *pEcc2 = (unsigned char *)iEccdata2;
for ( iIndex = 0; iIndex <2; iIndex++)
{
nT1 ^= (((*pEcc1) >> iIndex) & 0x01);
nT2 ^= (((*pEcc2) >> iIndex) & 0x01);
}
for (iIndex = 0; iIndex < 3; iIndex++)
iCompecc |= ((~(*pEcc1++) ^ ~(*pEcc2++)) << iIndex * 8);
for(iIndex = 0; iIndex < 24; iIndex++)
iEccsum += ((iCompecc >> iIndex) & 0x01);
switch (iEccsum)
{
case 0 :
DEBUG_PRINT(DEBUG_ECC, ("RESULT : no error\n"));
return ECC_NO_ERROR;
case 1 :
DEBUG_PRINT(DEBUG_ECC,("RESULT : ECC code 1 bit fail\n"));
return ECC_ECC_ERROR;
case 12 :
if (nT1 != nT2)
{
iFindbyte = ((iCompecc >> 17 & 1) << 8) + ((iCompecc >> 15 & 1) << 7) + ((iCompecc >> 13 & 1) << 6)
+ ((iCompecc >> 11 & 1) << 5) + ((iCompecc >> 9 & 1) << 4) + ((iCompecc >> 7 & 1) << 3)
+ ((iCompecc >> 5 & 1) << 2) + ((iCompecc >> 3 & 1) << 1) + (iCompecc >> 1 & 1);
iFindbit = (unsigned char)(((iCompecc >> 23 & 1) << 2) + ((iCompecc >> 21 & 1) << 1) + (iCompecc >> 19 & 1));
iNewvalue = (unsigned char)(pPagedata[iFindbyte] ^ (1 << iFindbit));
DEBUG_PRINT(DEBUG_ECC,("iCompecc = %d\n",iCompecc));
DEBUG_PRINT(DEBUG_ECC,("RESULT : one bit error\r\n"));
DEBUG_PRINT(DEBUG_ECC,("byte = %d, bit = %d\r\n", iFindbyte, iFindbit));
DEBUG_PRINT(DEBUG_ECC,("corrupted = %x, corrected = %x\r\n", pPagedata[iFindbyte], iNewvalue));
if (pOffset != NULL) *pOffset = iFindbyte;
if (pCorrected != NULL) *pCorrected = iNewvalue;
return ECC_CORRECTABLE_ERROR;
}
else
return ECC_UNCORRECTABLE_ERROR;
default :
DEBUG_PRINT(DEBUG_ECC,("RESULT : unrecoverable error\n"));
return ECC_UNCORRECTABLE_ERROR;
}
}
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