[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [XEN PATCH v7 04/20] docs: add Arm FF-A mediator
Describes a FF-A version 1.1 [1] mediator to communicate with a Secure Partition in secure world. [1] https://developer.arm.com/documentation/den0077/latest Signed-off-by: Jens Wiklander <jens.wiklander@xxxxxxxxxx> --- SUPPORT.md | 7 +++++++ docs/man/xl.cfg.5.pod.in | 15 +++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/SUPPORT.md b/SUPPORT.md index aa1940e55f09..5e0595419684 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -818,6 +818,13 @@ that covers the DMA of the device to be passed through. No support for QEMU backends in a 16K or 64K domain. +### ARM: Firmware Framework for Arm A-profile (FF-A) Mediator + + Status, Arm64: Tech Preview + +There are still some code paths where a vCPU may hog a pCPU longer than +necessary. The FF-A mediator is not yet implemented for Arm32. + ### ARM: Guest Device Tree support Status: Supported diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in index 024bceeb61b2..ca4fc3e67b0c 100644 --- a/docs/man/xl.cfg.5.pod.in +++ b/docs/man/xl.cfg.5.pod.in @@ -1645,6 +1645,21 @@ in OP-TEE. This feature is a B<technology preview>. +=item B<ffa> + +B<Arm only.> Allow a guest to communicate via FF-A with Secure Partitions +(SP), default false. + +Currently is only a small subset of the FF-A specification supported. Just +enough to communicate with OP-TEE. In general only direct messaging and +sharing memory with one SP. More advanced use cases where memory might be +shared or donated to multple SPs is not supported. + +See L<https://developer.arm.com/documentation/den0077/latest> for more +informantion about FF-A. + +This feature is a B<technology preview>. + =back =back -- 2.34.1
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