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author | Madhukar Pappireddy <madhukar.pappireddy@arm.com> | 2023-03-03 14:24:24 -0600 |
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committer | Madhukar Pappireddy <madhukar.pappireddy@arm.com> | 2023-05-01 13:29:48 -0500 |
commit | e60172911943b3c20817c3db8d12cd75e17804d5 (patch) | |
tree | 9a2263742af3f8096c168e837a9d6fcc735c87ee | |
parent | f0b64e507e9105813d9a5d16f70101cf0d8ca5a4 (diff) | |
download | arm-trusted-firmware-e60172911943b3c20817c3db8d12cd75e17804d5.tar.gz |
docs(spm): support for handling Group0 interrupts
Please refer the doc update.
Change-Id: Ib79fae1296bc28fa9bd0cd79609d6153bb57519b
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
-rw-r--r-- | docs/components/secure-partition-manager.rst | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/docs/components/secure-partition-manager.rst b/docs/components/secure-partition-manager.rst index f0caf89f7..8dc1c6136 100644 --- a/docs/components/secure-partition-manager.rst +++ b/docs/components/secure-partition-manager.rst @@ -1318,6 +1318,25 @@ A brief description of the events: direct request to SP2 by invoking FFA_RUN. - 9) SPMC resumes the pre-empted vCPU of SP2. +EL3 interrupt handling +~~~~~~~~~~~~~~~~~~~~~~ + +In GICv3 based systems, EL3 interrupts are configured as Group0 secure +interrupts. Execution traps to SPMC when a Group0 interrupt triggers while an +SP is running. Further, SPMC running at S-EL2 uses FFA_EL3_INTR_HANDLE ABI to +request EL3 platform firmware to handle a pending Group0 interrupt. +Similarly, SPMD registers a handler with interrupt management framework to +delegate handling of Group0 interrupt to the platform if the interrupt triggers +in normal world. + + - Platform hook + + - plat_spmd_handle_group0_interrupt + + SPMD provides platform hook to handle Group0 secure interrupts. In the + current design, SPMD expects the platform not to delegate handling to the + NWd (such as through SDEI) while processing Group0 interrupts. + Power management ---------------- @@ -1557,4 +1576,4 @@ Client <https://developer.arm.com/documentation/den0006/d/>`__ -------------- -*Copyright (c) 2020-2022, Arm Limited and Contributors. All rights reserved.* +*Copyright (c) 2020-2023, Arm Limited and Contributors. All rights reserved.* |