On 09/17/2012 12:38 PM, Stefano Stabellini wrote:
> Add a doc to describe the Xen ARM device tree bindings
>
>
> Changes in v5:
>
> - add a comment about the size of the grant table memory region;
> - add a comment about the required presence of a GIC node;
> - specify that the described properties are part of a top-level
> "hypervisor" node;
> - specify #address-cells and #size-cells for the example.
>
>
> Changes in v4:
>
> - "xen,xen" should be last as it is less specific;
> - update reg property using 2 address-cells and 2 size-cells.
>
>
> Signed-off-by: Stefano Stabellini <stefano.stabell...@eu.citrix.com>
> CC: devicetree-disc...@lists.ozlabs.org
> CC: David Vrabel <david.vra...@citrix.com>
> CC: Rob Herring <robherri...@gmail.com>
> CC: Dave Martin <dave.mar...@linaro.org>
This is so minimal now and it doesn't seem to have any overlap with kvm, so:
Acked-by: Rob Herring <rob.herr...@calxeda.com>
> ---
> Documentation/devicetree/bindings/arm/xen.txt | 25
> +++++++++++++++++++++++++
> 1 files changed, 25 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/arm/xen.txt
>
> diff --git a/Documentation/devicetree/bindings/arm/xen.txt
> b/Documentation/devicetree/bindings/arm/xen.txt
> new file mode 100644
> index 0000000..0f7b9c2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/xen.txt
> @@ -0,0 +1,25 @@
> +* Xen hypervisor device tree bindings
> +
> +Xen ARM virtual platforms shall have a top-level "hypervisor" node with
> +the following properties:
> +
> +- compatible:
> + compatible = "xen,xen-<version>", "xen,xen";
> + where <version> is the version of the Xen ABI of the platform.
> +
> +- reg: specifies the base physical address and size of a region in
> + memory where the grant table should be mapped to, using an
> + HYPERVISOR_memory_op hypercall. The memory region is large enough to map
> + the whole grant table (it is larger or equal to gnttab_max_grant_frames()).
> +
> +- interrupts: the interrupt used by Xen to inject event notifications.
> + A GIC node is also required.
> +
> +
> +Example (assuming #address-cells = <2> and #size-cells = <2>):
> +
> +hypervisor {
> + compatible = "xen,xen-4.3", "xen,xen";
> + reg = <0 0xb0000000 0 0x20000>;
> + interrupts = <1 15 0xf08>;
> +};
>
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