[ECOS] moving RedBoot config from one device to another - is "dd" enough?

[Andrew Lunn]

Tomasz Chmielewski wrote:
> I have a device, that has these partitions:
>
> Creating 5 MTD partitions on "IXP4XX-Flash.0":
> 0x00000000-0x00040000 : "RedBoot"
> 0x00080000-0x00200000 : "kern1"
> 0x00200000-0x00380000 : "kern2"
> 0x003c0000-0x003e0000 : "RedBoot config"
> 0x003e0000-0x00400000 : "FIS directory"
>
> and by default it starts Linux like below:
>
> RedBoot> fis load kern1
> RedBoot> exec -c "console=ttyS0,115200 root=/dev/hda1"
>
>
> I made a new kernel, and wrote it to "kern2" partition, and start it 
> like that:
>
> RedBoot> fis load kern2
> RedBoot> exec
>
>
> To do such changes in RedBoot, I have to unscrew/open the device, 
> connect a serial port to the device, and use "fconfig" to make the 
> changes.
>
>
> Now, I have to replicate this change to dozens of other devices.
>
> As a human being is a lazy creature, I believe there is an easier way 
> to do it than a boring opening the device, connecting a serial port, 
> "fconfig" to make RedBoot changes etc.
>
>
> So let's say I have a "master" device (properly configured), and the 
> devices I need to reconfigure.
>
> If I do this on a "master" device (Linux already started):
>
> # /dev/mtd3 is a "RedBoot config" partition
> dd if=/dev/mtd3 of=new-redboot-config
>
>
> And then, on the devices I want to reconfigure (Linux already started):
>
> dd if=new-redboot-config of=/dev/mtd3
>
>
> Will this work properly? Will the new device have its starting 
> sequence changed to:
>
> RedBoot> fis load kern2
> RedBoot> exec
>
> ?
>
> Perhaps, I should use something like "erase /dev/mtd3 0 12 1" first?
>
>
The basic concept is O.K. Im not familiar with mtd,  so i've no idea  if 
you need to erase  the block first, or if writing to it will 
automagically erase it.

    Andrew

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