/dev/mtdblock acts wrong....
shkim at fdma.snu.ac.kr
Tue Oct 30 00:34:29 EST 2001
when I command " dd of=/dev/mtdblock0 if=jffs.img"
my linux reports...
ll_rw_block: Trying to read nonexistent block-device 1f:00 (0)
mtdblock0: Input/output error
We have verified functions of nand flash driver(spia.c)
And works well. (read, write, out-of-band read/write)
Still, Ecc does not verify(Errors occured if ECC flag on)
If I want to use JFFS.. Do I need "ECC Flag Activate"?
and JFFS reports
*JFFS: Trying to mount device 1f:00.
*jffs_scan_flash(): start pos = 0x0, end = 0x8388608
*jffs_scan_flash(): Bad checksum: checksum = 6926185, raw_inode.dchksum =
*jffs_scan_flash(): Bad checksum: checksum = 3552929, raw_inode.dchksum =
*jffs_scan_flash(): 0xff at pos 0x49960.
*jffs_scan_flash(): 0xff ended at pos 0x65536.
**************** Dirty flash memory or bad inode: hexdump(pos = 0x65536,
How to solve it?
Please advice ~~
More information about the linux-mtd