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[PATCH v2 7/8] SUPPORT.md: Describe SCMI-SMC layer feature
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: "Andrei Cherechesu (OSS)" <andrei.cherechesu@xxxxxxxxxxx>
- Date: Mon, 30 Sep 2024 14:47:13 +0300
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- Cc: andrei.cherechesu@xxxxxxxxxxx, S32@xxxxxxx, Andrei Cherechesu <andrei.cherechesu@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Mon, 30 Sep 2024 11:47:45 +0000
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From: Andrei Cherechesu <andrei.cherechesu@xxxxxxx>
Describe the layer which enables SCMI over SMC calls forwarding
to EL3 FW if issued by Dom0. If the SCMI firmware node is not
found in Dom0's DT during initialization, it fails silently
as it's not mandatory.
The SCMI SMCs trapping at EL2 now lets Dom0 perform SCMI ops for
interacting with system-level resources almost as if it would be
running natively.
Signed-off-by: Andrei Cherechesu <andrei.cherechesu@xxxxxxx>
---
SUPPORT.md | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/SUPPORT.md b/SUPPORT.md
index 23dd7e6424..d8ffddfc44 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -927,6 +927,14 @@ Add/Remove device tree nodes using a device tree overlay
binary (.dtbo).
Status: Tech Preview
+### Arm: SCMI over SMC calls forwarding to EL3 Firmware
+
+Enable SCMI calls using SMC as doorbell mechanism and Shared Memory for
+transport ("arm,scmi-smc" compatible only) to reach EL3 Firmware if issued
+by Dom0. Some platforms use SCMI for access to system-level resources.
+
+ Status: Supported
+
## Virtual Hardware, QEMU
This section describes supported devices available in HVM mode using a
--
2.45.2
|
