Re: JFFS2 with AM29LV256M

[Manfred Gruber <gruber.m@utanet.at>]

Hi !

Am Donnerstag, 19. August 2004 12:45 schrieben Sie:
> > Hmmm ok, so it's do_write_oneword() which is broken.
>
> Possibly it still could be the chip. do_write_oneword since it
> is read the data back anyway confirms that the data read back is
> what was written.  I don't believe the write_buffer code path
> does any but the most rudimentary sanity checks.

This is correct. read_oneword does a check but also with paching this out the 
problem is there.

I found out that the first write one block works the secound not, any idea ?
copy a file first come in the write one block function: 

MTD do_write_buffer(): WRITE 0x0028e9c0(0x00000069)
MTD do_write_oneword(): WRITE 0x0028e9d8(0x6161616a)
MTD do_write_oneword(): WRITE addr 0x0028e9d8
MTD do_write_oneword(): WRITE oldd 0x6161616a curd (0x6161616a)
MTD do_write_oneword(): WRITE oldd 0x6161616a curd (0x6161616a)
MTD do_write_oneword(): WRITE 0x0028e9dc(0xffffff61)
MTD do_write_oneword(): WRITE addr 0x0028e9dc
MTD do_write_oneword(): WRITE oldd 0xffffff61 curd (0xffffff61)
MTD do_write_oneword(): WRITE oldd 0xffffff61 curd (0xffffff61)

secound come in the write one block function:

MTD do_write_buffer(): WRITE 0x0028e9e0(0xe0021985)
MTD do_write_buffer(): WRITE 0x0028f0c0(0x728ea668)
MTD do_write_buffer(): WRITE 0x0028f100(0xbc68ad56)
MTD do_write_oneword(): WRITE 0x0028ea24(0x978d0902)
MTD do_write_oneword(): WRITE addr 0x0028ea24
MTD do_write_oneword(): WRITE oldd 0xff640800 curd (0xff240800)
MTD do_write_oneword(): software timeout
MTD do_write_oneword(): WRITE addr 0x0028ea24
MTD do_write_oneword(): WRITE oldd 0xff640800 curd (0xff240800)
MTD do_write_oneword(): software timeout
MTD do_write_oneword(): WRITE addr 0x0028ea24
MTD do_write_oneword(): WRITE oldd 0xff640800 curd (0xff240800)

Any idea ?

Thanks,regards