Hi Marc,
Am 13.04.2011 11:51, schrieb Marc Kleine-Budde:
On 04/13/2011 11:28 AM, Thomas Mayer wrote:
to copy barebox to a mmc I use the command "dd if=barebox.bin
of=/dev/sdb bs=512 seek=2 skip=2&& sync". So I don't touch the
first 0x400 bytes with contains the partition table and everything
is fine.
But I want to write a little script to update barebox itself via
tftp. So I create a partition "/dev/self0" (0x00000 to 0x40000) and
update barebox with "tftp barebox.bin /dev/self0". The problem is
that barebox write the first 0x400 bytes too and overwrite the
partition table .
Is there any way to "seek" and "skip" with barebox?
Not directly. What you can do is this:
tftp barebox.bin
memcpy -s barebox.bin -d /dev/self0 512 0
It's working, but I have to use "1024" instead of "512". Also I have to
change my partition init from
"devfs_add_partition("disk0", 0x000000, 0x040000, PARTITION_FIXED,
"self0");"
to
devfs_add_partition("disk0", 0x000400, 0x040000, PARTITION_FIXED, "self0");
what about using:
memcpy -s barebox.bin -d /dev/self0 1024 1024
works too, with partition from 0x00000 to 0x040000.
Regards,
Thomas
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