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adam.huang
Arm Trusted Firmware
Commits
2afcf1d4
Commit
2afcf1d4
authored
Jul 01, 2020
by
Lauren Wehrmeister
Committed by
TrustedFirmware Code Review
Jul 01, 2020
Browse files
Merge "doc: RAS: fixing broken links" into integration
parents
568a8817
c3233c11
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docs/components/exception-handling.rst
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2afcf1d4
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@@ -176,6 +176,8 @@ dispatcher may register more than one priority level.
Dispatchers are assigned interrupt priority levels in two steps:
.. _Partitioning priority levels:
Partitioning priority levels
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@@ -365,6 +367,8 @@ assign interrupts to fictitious dispatchers:
See also the `Build-time flow`_ and the `Run-time flow`_.
.. _Activating and Deactivating priorities:
Activating and Deactivating priorities
--------------------------------------
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docs/components/ras.rst
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2afcf1d4
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@@ -9,10 +9,8 @@ In conjunction with the |EHF|, support for RAS extension enables firmware-first
paradigm for handling platform errors: exceptions resulting from errors are
routed to and handled in EL3. Said errors are Synchronous External Abort (SEA),
Asynchronous External Abort (signalled as SErrors), Fault Handling and Error
Recovery interrupts. The |EHF| document mentions various `error handling
use-cases`__.
.. __: exception-handling.rst#delegation-use-cases
Recovery interrupts. The |EHF| document mentions various :ref:`error handling
use-cases <delegation-use-cases>` .
For the description of Arm RAS extensions, Standard Error Records, and the
precise definition of RAS terminology, please refer to the Arm Architecture
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@@ -46,9 +44,7 @@ Platform APIs
The RAS framework allows the platform to define handlers for External Abort,
Uncontainable Errors, Double Fault, and errors rising from EL3 execution. Please
refer to the porting guide for the `RAS platform API descriptions`__.
.. __: ../getting_started/porting-guide.rst#external-abort-handling-and-ras-support
refer to :ref:`RAS Porting Guide <External Abort handling and RAS Support>`.
Registering RAS error records
-----------------------------
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@@ -114,9 +110,8 @@ The error handler must have the following prototype:
The ``data`` constant parameter describes the various properties of the error,
including the reason for the error, exception syndrome, and also ``flags``,
``cookie``, and ``handle`` parameters from the `top-level exception handler`__.
.. __: interrupt-framework-design.rst#el3-interrupts
``cookie``, and ``handle`` parameters from the :ref:`top-level exception handler
<EL3 interrupts>`.
The platform is expected populate an array using the macros above, and register
the it with the RAS framework using the macro ``REGISTER_ERR_RECORD_INFO()``,
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@@ -229,21 +224,17 @@ Interaction with Exception Handling Framework
As mentioned in earlier sections, RAS framework interacts with the |EHF| to
arbitrate handling of RAS exceptions with others that are routed to EL3. This
means that the platform must partition a `priority level`__ for handling RAS
exceptions. The platform must then define the macro ``PLAT_RAS_PRI`` to the
priority level used for RAS exceptions. Platforms would typically want to
allocate the highest secure priority for RAS handling.
.. __: exception-handling.rst#partitioning-priority-levels
Handling of both `interrupt`__ and `non-interrupt`__ exceptions follow the
sequences outlined in the |EHF| documentation. I.e., for interrupts, the
priority management is implicit; but for non-interrupt exceptions, they're
explicit using `EHF APIs`__.
.. __: exception-handling.rst#interrupt-flow
.. __: exception-handling.rst#non-interrupt-flow
.. __: exception-handling.rst#activating-and-deactivating-priorities
means that the platform must partition a :ref:`priority level <Partitioning
priority levels>` for handling RAS exceptions. The platform must then define
the macro ``PLAT_RAS_PRI`` to the priority level used for RAS exceptions.
Platforms would typically want to allocate the highest secure priority for
RAS handling.
Handling of both :ref:`interrupt <interrupt-flow>` and :ref:`non-interrupt
<non-interrupt-flow>` exceptions follow the sequences outlined in the |EHF|
documentation. I.e., for interrupts, the priority management is implicit; but
for non-interrupt exceptions, they're explicit using :ref:`EHF APIs
<Activating and Deactivating priorities>`.
--------------
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docs/design/interrupt-framework-design.rst
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2afcf1d4
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@@ -138,6 +138,8 @@ Non-secure interrupts
reason to route the interrupt to EL3 software and then hand it back to
non-secure software for handling.
.. _EL3 interrupts:
EL3 interrupts
^^^^^^^^^^^^^^
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docs/getting_started/porting-guide.rst
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2afcf1d4
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@@ -2729,6 +2729,8 @@ data on the designated crash console. It should only use general purpose
registers x0 through x5 to do its work. The return value is 0 on successful
completion; otherwise the return value is -1.
.. _External Abort handling and RAS Support:
External Abort handling and RAS Support
---------------------------------------
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