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.stabellini@eu.citrix.com CC: devicetree-discuss@lists.ozlabs.org CC: David Vrabel david.vrabel@citrix.com CC: Rob Herring robherring2@gmail.com CC: Dave Martin dave.martin@linaro.org
This is so minimal now and it doesn't seem to have any overlap with kvm, so:
Acked-by: Rob Herring rob.herring@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>;
+};