Hi,
I want to restore the NAND flash file system on DM365 EVM, so I followed the document of DM365 “getting started guide” on A.5.2.
1. Flash_eraseall /dev/mtd3
2. Mount –t yaffs2 /dev/mtdblock3 /mnt/nand
3. tar xf /target-reduced-dm365.tar
But for 1. Flash_eraseall, I saw the following:
Erasing 128 Kibyte @ 1e0000 -- 0 % complete.
flash_eraseall: /dev/mtd3: MTD Erase failure: Input/output error
Erasing 128 Kibyte @ 6b20000 -- 20 % complete.
flash_eraseall: /dev/mtd3: MTD Erase failure: Input/output error
Erasing 128 Kibyte @ 16d210000 -- 21 % complete.
Is it a hardware error or software error? And how to fix it?
When “tar xf /target-reduced-dm365.tar”
There are thousands of lines like
**>> yaffs chunk xx was not erased
**>> yaffs write required 2 attempt.
In the kernel configuration, should it be configured like “let yaffs do it own ECC”. The default is not.
Of course, the NAND does not work.
Thanks a lot.
Tao
