Redboot FIS entry upgrade from Linux

Hamish Moffatt hamish at
Wed Feb 13 23:30:35 EST 2008

On Sun, Jan 13, 2008 at 06:31:20PM +0200, Jacob Avraham wrote:
> Hi,
> Say I have a zImage or ramdisk image as a file listed in FIS,
> which I use to  "fis load" from Redboot.
> Now I want to upgrade an image from Linux, so in addition to
> writing into the specific mtd partition I need to update the FIS
> directory entry checksum value.
> Are there any utils to facilitate that?
> Or maybe such where not developed because it's not a good idea?

(Sorry, I'm a bit behind on this list.)

There's a utility here which can modify the RedBoot FIS table:

I added support for updating the checksums. You can get my patch here:

Like you, I update the kernel/initrd from linux then use fis to update
the checksums so that RedBoot will still load the image.

Hamish Moffatt VK3SB <hamish at> <hamish at>

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