lkml.org 
[lkml]   [2020]   [Jun]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH 1/3] dt-bindings: Add ARM PSA FF binding for non-secure VM partitions
Date
Add devicetree bindings for a Arm PSA FF-A compliant non-secure partition
at virtual interface(VMs).

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---
.../devicetree/bindings/arm/arm,psa-ffa.txt | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/arm,psa-ffa.txt

diff --git a/Documentation/devicetree/bindings/arm/arm,psa-ffa.txt b/Documentation/devicetree/bindings/arm/arm,psa-ffa.txt
new file mode 100644
index 000000000000..ee543fb5b397
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/arm,psa-ffa.txt
@@ -0,0 +1,47 @@
+Arm Platform Security Architecture(PSA) Firmware Framework(FF) for Armv8-A
+--------------------------------------------------------------------------
+
+This binding is intended to define the interface the firmware framework
+implementing the Non-secure partitions/endpoints(mostly VMs) as described
+in ARM document ARM DEN 0077A ("Arm Platform Security Architecture
+Firmware Framework for Arm v8-A") [0]
+
+In the case of a Non-secure virtual FF-A instance, the hypervisor
+(e.g. Linux KVM) can use this binding to create and launch VM partitions.
+
+The SMCCC conduit available in the VM partition itself is used and hence
+there is no explicit binding to specify the conduit used for PSA FFA
+interface.
+
+Required properties:
+
+- compatible : Should be one of:
+ "arm,psa-ffa"
+
+- One or more child nodes, each describing an PSA FFA partition using the
+ following required properties:
+
+ - compatible: Should be one of:
+ "arm,psa-ffa-partition"
+
+ - uuid : The 128-bit UUID [2] of the service implemented by this partition,
+ represented as a string.
+
+[0] https://developer.arm.com/docs/den0077/latest
+[1] https://tools.ietf.org/html/rfc4122
+
+Example:
+
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ firmware {
+ psa-ffa {
+ compatible = "arm,psa-ffa";
+
+ partition0: psa_ffa_partition {
+ compatible = "arm,psa-ffa-partition";
+ uuid = "12345678-9abc-def0-1234-56789abcdef0";
+ };
+ };
+ };
--
2.17.1
\
 
 \ /
  Last update: 2020-06-01 11:47    [W:0.161 / U:0.564 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site