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docs(spm): support for handling Group0 interrupts

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Please refer the doc update.

Change-Id: Ib79fae1296bc28fa9bd0cd79609d6153bb57519b
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
This commit is contained in:
Madhukar Pappireddy 2023-03-03 14:24:24 -06:00
parent f0b64e507e
commit e601729119
1 changed files with 20 additions and 1 deletions
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21
docs/components/secure-partition-manager.rst
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@ -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.*