| Message ID | 1347903543-2135-6-git-send-email-stefano.stabellini@eu.citrix.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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>; > +}; >
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>; +};
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> --- Documentation/devicetree/bindings/arm/xen.txt | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/xen.txt