Testing ECC bitflip correction » linux_512MBnand_biterr.txt
| 1 |
root@mitysom-335x:~# flash_erase /dev/mtd1 0 0 |
|---|---|
| 2 |
Erasing 256 Kibyte @ 0 -- 100 % complete |
| 3 |
root@mitysom-335x:~# nandwrite -p /dev/mtd1 /run/media/mmcblk0p1/MLO |
| 4 |
Writing data to block 0 at offset 0x0 |
| 5 |
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| 6 |
root@mitysom-335x:~# nanddump /dev/mtd1 -l 4096 > /dev/null |
| 7 |
ECC failed: 0 |
| 8 |
ECC corrected: 0 |
| 9 |
Number of bad blocks: 0 |
| 10 |
Number of bbt blocks: 0 |
| 11 |
Block size 262144, page size 4096, OOB size 224 |
| 12 |
Dumping data starting at 0x00000000 and ending at 0x00001000... |
| 13 |
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| 14 |
root@mitysom-335x:~# nanddump --oob /dev/mtd0 -l 4096 -f nandpage.raw |
| 15 |
ECC failed: 0 |
| 16 |
ECC corrected: 0 |
| 17 |
Number of bad blocks: 1 |
| 18 |
Number of bbt blocks: 0 |
| 19 |
Block size 262144, page size 4096, OOB size 224 |
| 20 |
Dumping data starting at 0x00000000 and ending at 0x00001000... |
| 21 |
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| 22 |
root@mitysom-335x:~# xxd nandpage.raw > nandpage.xxd |
| 23 |
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| 24 |
root@mitysom-335x:~# vi nandpage.xxd |
| 25 |
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| 26 |
root@mitysom-335x:~# xxd -r nandpage.xxd nandpage.flipped |
| 27 |
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| 28 |
root@mitysom-335x:~# nandwrite --oob --noecc /dev/mtd1 nandpage.flipped |
| 29 |
Writing data to block 0 at offset 0x0 |
| 30 |
|
| 31 |
root@mitysom-335x:~# nanddump /dev/mtd1 -l 4096 > /dev/null |
| 32 |
ECC failed: 1 |
| 33 |
ECC corrected: 0 |
| 34 |
Number of bad blocks: 0 |
| 35 |
Number of bbt blocks: 0 |
| 36 |
Block size 262144, page size 4096, OOB size 224 |
| 37 |
Dumping data starting at 0x00000000 and ending at 0x00001000... |
| 38 |
ECC: 1 corrected bitflip(s) at offset 0x00000000 |
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