Updated the Dreamplug to 3.11.3, and – although # make uImage… still works, decided to try the ‘new/improved’ Device Tree option, as this is the way of the future – apparently..
I found that the obvious config option of ‘Marvell Dreamplug…..’ etc didn’t work, and I would assume this is due to this being an earlier Dreamplug, that is actually a GuruPlug inside:

# cat /proc/cpuinfo
processor       : 0
model name      : Feroceon 88FR131 rev 1 (v5l)
BogoMIPS        : 1191.11
Features        : swp half thumb fastmult edsp
CPU implementer : 0x56
CPU architecture: 5TE
CPU variant     : 0x2
CPU part        : 0x131
CPU revision    : 1

Hardware        : Marvell GuruPlug Reference Board
Revision        : 0000
Serial          : 0000000000000000

So…   I found that the following config options did work:

<Marvell Kirkwood Implementations>
         ‘Marvell GuruPlug Reference Board’ with ‘Marvell GuruPlug Reference Board (Flattened Device Tree)’

Then:

# make .....etc
# make modules_install
# cat arch/arm/boot/zImage arch/arm/boot/dts/kirkwood-guruplug-server-plus.dtb > arch/arm/boot/zImage_w_dtb
# mkimage -A arm -O linux -T kernel -C none -a 0x8000 -e 0x8000 -n "linux-dreamplug" -d arch/arm/boot/zImage_w_dtb ../uImage3113

Then copy the uImage and modules to the SD Card partitions, and modify the UBoot parameter to point to the new uImage, as usual..

$ uname -a
Linux rgdreamplug 3.11.3 #1 Tue Oct 1 21:50:43 BST 2013 armv5tel armv5tel armv5tel GNU/Linux

As I mentioned in an earlier article, I still haven’t managed to make this work with Kernel 3.12-rc..

Robert Gadsdon..  October 1, 2013