通过ccs烧录uboot，发现校验不通过，但是使用其他方式烧录能通过，
使用的nand flash 是三星的kf92g08u0m，
运行bsl中的nand flash测试程序是可以测试通过，能读写正常，但是测试程序中没有ecc校验部分。
Choose your operation
Enter 1 ---> To Flash an Image
Enter 2 ---> To ERASE the whole NAND
Enter 3 ---> To EXIT
1
Enter image file path
F:\u-boot.noxip.bin
Enter offset (in hex):
0
Choose the ECC scheme from given options :
Enter 1 ---> BCH 8-bit
Enter 2 ---> HAM
Enter 3 ---> T0 EXIT
Please enter ECC scheme type :
1
Starting NETRA NAND writer
----------------------
NAND FLASH DETAILS
----------------------
Device ID : 0xda
Manufacture ID : 0xec
Page Size : 2048 Bytes
Spare Size : 64 Bytes
Pages_Per_Block : 64
Number_of_Blocks : 2048
Device_width : 1 Byte
DeviceSize : 256 MB
Setting the ECC scheme
Set the BCH 8 bit ECC scheme .... done
Preparing to Flash image ....
Opening image ... done.
debug_loadAdd=0
Erasing Required Blocks [start = 0, count = 2]...Done
Flashing image ...
Number of blocks needed for header and data: 0x2
Attempting to start write in block number 0x0.
Writing image data to Block 0 Page0x0
Verify failed. Attempting to clear page
Attempting to start write in block number 0x1.
Writing image data to Block 1 Page0x0
Verify failed. Attempting to clear page
Attempting to start write in block number 0x2.
Writing image data to Block 2 Page0x0
Verify failed. Attempting to clear page
Attempting to start write in block number 0x3.
Writing image data to Block 3 Page0x0
Verify failed. Attempting to clear page
Attempting to start write in block number 0x4.
Writing image data to Block 4 Page0x0
Verify failed. Attempting to clear page
Attempting to start write in block number 0x5.
Writing image data to Block 5 Page0x0
通过源码调试发现：
Uint32 NETRA_NAND_verifyPage(NETRA_NAND_InfoHandle hNandInfo, Uint32 block, Uint32 page, Uint8* src, Uint8* dest) {
Uint32 i, errCnt;
if (NAND_readPage(hNandInfo, block, page, dest) != E_PASS)
return E_FAIL;
这里出错，直接返回。
同时跟进NAND_readPage这个函数
// Use ECC bytes to correct any errors
if ((*hNandInfo->hEccInfo->fxnCorrect)(hNandInfo, (block * hNandInfo->pagesPerBlock) + page, spareBytes, &dest[hNandInfo->dataBytesPerOp * i], i) != E_PASS) {
return E_FAIL;
}
也即这个指针函数对应的
static Uint32 DEVICE_NAND_ECC_BCH_correct(NETRA_NAND_InfoHandle hNandInfo, Uint32 pageLoc, Uint8 *spareBytes, Uint8 *data, Uint32 opNum) {
Uint8 syndrome[16];
Uint32 numerror;
Uint32 errorloc[8];
//sapreBytes is of no use therefore used as dump array
if (ELM_CheckErrors(&numerror, errorloc, syndrome) != E_PASS) {
// Error found in data are not fixable
return E_FAIL;
}
这里失败。
