etop-wesley / hac

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u-boot nand write/write.yaffs cause nor flash data corrupt sometimes #8

Open etop-wesley opened 14 years ago

etop-wesley commented 14 years ago

使用 nand write/write.yaffs烧写nand很多次后,上电重启,会偶然发现nor上的数据丢失,需要重新使用h-jtag烧写。 偶然现象,原因尚不清楚。

2010.06.23,使用H-Flasher将无法启动的nor flash数据读出与原始数据使用WinHex做对比, 发现在CA,CB,FE,FF,1C6,1C7, 1F3, 206,207,272,273,2A6,2A7,2DF,380,381,408,435,461,48A,48B,4AC,4AD,5F4,5F5,650,651,77F,7C7,812,813,836,837,87C,87D,8E4,8E5,992,993,9C3,A0E,A0F,A37不同

etop-wesley commented 14 years ago

重新烧写后,多次断电上电,再读取数据查看,没有发现有数据改变

etop-wesley commented 14 years ago

after many testing, it seems this was caused by wrong operation. maybe, not very sure yet!

etop-wesley commented 14 years ago

or wrong target position while writing something, nand write, cp.b ...