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xen/arm, device-tree: Make static-mem use #{address,size}-cells
In order to keep consistency in the device tree binding, there is
no need for static memory allocation feature to define a specific
set of address and size cells for "xen,static-mem" property.
Therefore, this commit reuses the regular #{address,size}-cells
for parsing the device tree "xen,static-mem" property. Update
the documentation accordingly.
Also, take the chance to remove the unnecessary "#address-cells"
and "#size-cells" in the domU1 node of the device tree to only
emphasize the related part that the example is showing.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Reviewed-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Henry Wang authored and 
Stefano Stabellini committed
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@@ -350,8 +350,8 @@ areas are pre-defined by configuration using physical address ranges.
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Memory can be statically allocated to a domain using the property "xen,static-
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mem" defined in the domain configuration. The number of cells for the address
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and the size must be defined using respectively the properties
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"#xen,static-mem-address-cells" and "#xen,static-mem-size-cells".
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and the size must be defined respectively by the parent node properties
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"#address-cells" and "#size-cells".
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The property 'memory' is still needed and should match the amount of memory
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given to the guest. Currently, it either comes from static memory or lets Xen
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@@ -366,14 +366,13 @@ device-tree:
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/ {
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chosen {
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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...
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domU1 {
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compatible = "xen,domain";
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#address-cells = <0x2>;
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#size-cells = <0x2>;
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cpus = <2>;
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memory = <0x0 0x80000>;
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#xen,static-mem-address-cells = <0x1>;
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#xen,static-mem-size-cells = <0x1>;
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xen,static-mem = <0x30000000 0x20000000>;
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...
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};
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@@ -33,14 +33,13 @@ on static allocation in the device-tree:
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/ {
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chosen {
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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...
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domU1 {
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compatible = "xen,domain";
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#address-cells = <0x2>;
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#size-cells = <0x2>;
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cpus = <2>;
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memory = <0x0 0x80000>;
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#xen,static-mem-address-cells = <0x1>;
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#xen,static-mem-size-cells = <0x1>;
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xen,static-mem = <0x30000000 0x20000000>;
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direct-map;
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...
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