[Server-devel] DB64660 kernel.

Daniel Jared Dominguez danjared at laptop.org
Sat Jul 7 16:05:10 EDT 2007

What is the state of OFW on these, exactly?


On Sat, 2007-07-07 at 01:45 -0400, David Woodhouse wrote:
> Not a very useful kernel yet, but a kernel nonetheless.
> You'll need to install the 'dtc' tool first:
> git://www.jdl.com/software/dtc.git
> Then fetch and build the kernel:
>  git-clone --reference linux-2.6 git://git.infradead.org/~dwmw2/db64660-2.6.git
>  cd db64660-2.6
>  make db64660_defconfig
>  make zImage.dts
>  objcopy -Obinary  arch/powerpc/boot/zImage.dts.db64660 zImage.bin
> Then you can use uboot to load that zImage.bin to any address you like
> (for example 0x400000) and jump to it.
> The zImage is a wrapper which presents a fake device-tree to the kernel.
> When you're ready to boot from OpenFirmware, you should be using the
> vmlinux which is in the top-level directory instead. Or just start
> yaboot and use _it_ to boot the kernel.
> I wouldn't look too closely at my fake device-tree. It's copied from a
> similar board and hacked about a bit to make at least serial ports and
> NOR flash work, but is probably mostly wrong. In particular, I'm
> confused that I had to make the 'reg' property of the serial ports
> 'f1012000' instead of just '12000'. That's not what the prpmc2800 board
> did, which I copied from. It's in arch/powerpc/boot/dts/db64660.dts if
> you want to see it.
> I'll work on getting PCI and other things working; you should at least
> be able to test the hand-off from OF to (yaboot to) kernel with this
> though. We could probably even put a root file system in the NOR flash
> and run from that.

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