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| Started by | Shannon Zhao <zhaoshenglong@huawei.com> |
|---|---|
| First post | 2016-02-05 04:10 +0100 |
| Last post | 2016-02-08 12:40 +0100 |
| Articles | 2 — 2 participants |
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[PATCH v4 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Shannon Zhao <zhaoshenglong@huawei.com> - 2016-02-05 04:10 +0100
Re: [PATCH v4 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Stefano Stabellini <stefano.stabellini@eu.citrix.com> - 2016-02-08 12:40 +0100
| From | Shannon Zhao <zhaoshenglong@huawei.com> |
|---|---|
| Date | 2016-02-05 04:10 +0100 |
| Subject | [PATCH v4 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms |
| Message-ID | <qYEWt-2Kf-3@gated-at.bofh.it> |
From: Shannon Zhao <shannon.zhao@linaro.org>
Add a "uefi" node under /hypervisor node in FDT, then Linux kernel could
scan this to get the UEFI information.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
---
CC: Rob Herring <robh@kernel.org>
---
Documentation/devicetree/bindings/arm/xen.txt | 33 +++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt
index 0f7b9c2..6f83f76 100644
--- a/Documentation/devicetree/bindings/arm/xen.txt
+++ b/Documentation/devicetree/bindings/arm/xen.txt
@@ -15,6 +15,26 @@ the following properties:
- interrupts: the interrupt used by Xen to inject event notifications.
A GIC node is also required.
+To support UEFI on Xen ARM virtual platforms, Xen populates the FDT "uefi" node
+under /hypervisor with following parameters:
+
+________________________________________________________________________________
+Name | Size | Description
+================================================================================
+xen,uefi-system-table | 64-bit | Guest physical address of the UEFI System
+ | | Table.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-start | 64-bit | Guest physical address of the UEFI memory
+ | | map.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-size | 32-bit | Size in bytes of the UEFI memory map
+ | | pointed to in previous entry.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI
+ | | memory map.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-desc-ver | 32-bit | Version of the mmap descriptor format.
+--------------------------------------------------------------------------------
Example (assuming #address-cells = <2> and #size-cells = <2>):
@@ -22,4 +42,17 @@ hypervisor {
compatible = "xen,xen-4.3", "xen,xen";
reg = <0 0xb0000000 0 0x20000>;
interrupts = <1 15 0xf08>;
+ uefi {
+ xen,uefi-system-table = <0xXXXXXXXX>;
+ xen,uefi-mmap-start = <0xXXXXXXXX>;
+ xen,uefi-mmap-size = <0xXXXXXXXX>;
+ xen,uefi-mmap-desc-size = <0xXXXXXXXX>;
+ xen,uefi-mmap-desc-ver = <0xXXXXXXXX>;
+ };
};
+
+The format and meaning of the "xen,uefi-*" parameters are similar to those in
+Documentation/arm/uefi.txt, which are provided by the regular UEFI stub. However
+they differ because they are provided by the Xen hypervisor, together with a set
+of UEFI runtime services implemented via hypercalls, see
+http://xenbits.xen.org/docs/unstable/hypercall/x86_64/include,public,platform.h.html.
--
2.0.4
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| From | Stefano Stabellini <stefano.stabellini@eu.citrix.com> |
|---|---|
| Date | 2016-02-08 12:40 +0100 |
| Subject | Re: [PATCH v4 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms |
| Message-ID | <qZSkG-4AE-17@gated-at.bofh.it> |
| In reply to | #1327431 |
On Fri, 5 Feb 2016, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@linaro.org>
>
> Add a "uefi" node under /hypervisor node in FDT, then Linux kernel could
> scan this to get the UEFI information.
>
> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
> Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> CC: Rob Herring <robh@kernel.org>
> ---
> Documentation/devicetree/bindings/arm/xen.txt | 33 +++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt
> index 0f7b9c2..6f83f76 100644
> --- a/Documentation/devicetree/bindings/arm/xen.txt
> +++ b/Documentation/devicetree/bindings/arm/xen.txt
> @@ -15,6 +15,26 @@ the following properties:
> - interrupts: the interrupt used by Xen to inject event notifications.
> A GIC node is also required.
>
> +To support UEFI on Xen ARM virtual platforms, Xen populates the FDT "uefi" node
> +under /hypervisor with following parameters:
> +
> +________________________________________________________________________________
> +Name | Size | Description
> +================================================================================
> +xen,uefi-system-table | 64-bit | Guest physical address of the UEFI System
> + | | Table.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-start | 64-bit | Guest physical address of the UEFI memory
> + | | map.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-size | 32-bit | Size in bytes of the UEFI memory map
> + | | pointed to in previous entry.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI
> + | | memory map.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-desc-ver | 32-bit | Version of the mmap descriptor format.
> +--------------------------------------------------------------------------------
>
> Example (assuming #address-cells = <2> and #size-cells = <2>):
>
> @@ -22,4 +42,17 @@ hypervisor {
> compatible = "xen,xen-4.3", "xen,xen";
> reg = <0 0xb0000000 0 0x20000>;
> interrupts = <1 15 0xf08>;
> + uefi {
> + xen,uefi-system-table = <0xXXXXXXXX>;
> + xen,uefi-mmap-start = <0xXXXXXXXX>;
> + xen,uefi-mmap-size = <0xXXXXXXXX>;
> + xen,uefi-mmap-desc-size = <0xXXXXXXXX>;
> + xen,uefi-mmap-desc-ver = <0xXXXXXXXX>;
> + };
> };
> +
> +The format and meaning of the "xen,uefi-*" parameters are similar to those in
> +Documentation/arm/uefi.txt, which are provided by the regular UEFI stub. However
> +they differ because they are provided by the Xen hypervisor, together with a set
> +of UEFI runtime services implemented via hypercalls, see
> +http://xenbits.xen.org/docs/unstable/hypercall/x86_64/include,public,platform.h.html.
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