On Tue, 2008-12-16 at 11:47 +0100, Aurelien Jarno wrote:
> On Mon, Dec 15, 2008 at 06:17:32PM -0600, Hollis Blanchard wrote:
> > Since most IO devices are integrated into the 440EP chip, "Bamboo support"
> > mostly entails implementing the -kernel, -initrd, and -append options.
> >
> > These options are implemented by loading the guest as if u-boot had done it,
> > i.e. loading a flat device tree, updating it to hold initrd addresses, ram
> > size, and command line, and passing the FDT address in r3.
> >
> > Since we use it with KVM, we enable the virtio block driver and include
> > hooks
> > necessary for KVM support.
> >
> > Signed-off-by: Hollis Blanchard <holl...@us.ibm.com>
> > ---
> > Made comment more specific.
> > ---
> > Makefile | 2 +-
> > Makefile.target | 2 +-
> > hw/boards.h | 1 +
> > hw/ppc440_bamboo.c | 190 ++++++++++++++++++++++++++++++++++++++++
> > pc-bios/bamboo.dtb | Bin 0 -> 3163 bytes
> > pc-bios/bamboo.dts | 234
> > ++++++++++++++++++++++++++++++++++++++++++++++++++
>
> I guess the .dtb file is generated from the .dts. Could you give us more
> details about that? When the tools need to generate the dtb file are
> installed on the build machine, we may want to generate the .dtb during
> the build process.
The dtb file ("device tree binary") is generated from the dts ("device
tree source") by a tool called dtc, the device tree compiler.[1]
dtc is available in major distributions: in Fedora the package name is
"dtc"; in Debian it is "device-tree-compiler" (available in testing and
unstable).
[1] http://git.jdl.com/gitweb/?p=dtc.git;a=summary
--
Hollis Blanchard
IBM Linux Technology Center
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