MTD Devices

[schardt <g.schardt@fz-juelich.de>]

Hi again,

i have some problems to copy a cramfs image to flash.  the situation as
follows:

cat /proc/mtd:
dev:    size   erasesize  name
mtd0: 00180000 00010000 "kernel"
mtd1: 00280000 00010000 "rootfs"

cat /proc/partitions:
major minor  #blocks  name

 254     0      62720 xsa
 254     1       9840 xsa1
 254     2      52864 xsa2
  31     0       1536 mtdblock0
  31     1       2560 mtdblock1

ls -l /dev/mtd*:
crw-r--r--    1 root     root      90,   0 Jan  1 00:14 /dev/mtd0
crw-r--r--    1 root     root      90,   2 Jan  1 00:21 /dev/mtd1
brw-r--r--    1 root     root      31,   0 Jan  1 00:01 /dev/mtdblock0
brw-r--r--    1 root     root      31,   1 Jan  1 00:08 /dev/mtdblock1


now, imho it is possible to make a

- eraseall /dev/mtd1 to erase the flash
- dd if=cramfs.img of=/dev/mtd1 to copy image to flash

but if i read the mtd1 device back, the flash is emtpy :(((

what is my mistake ?

Georg



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