mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 21:54:06 +08:00
c43cdfbc4c
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> Acked-by: Rob Herring <rob.herring@calxeda.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>
26 lines
831 B
Plaintext
26 lines
831 B
Plaintext
* 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>;
|
|
};
|