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| H A D | porting-guide.rst | 839739e23486c0be95c57da2533e3ac707f0a360 Mon Oct 21 13:18:46 UTC 2024 Boyan Karatotev <boyan.karatotev@arm.com> docs(ras): document RAS considerations with powerdown
RAS errors can cause problems for powerdown. On cpus like the A510,
receiving a RAS error after executing the powerdown `wfi` will deadlock
the core. The TRM suggests disabling the generation of interrupts.
However, which interrupts to disable is not apparent for generic code as
the meaning of each error record is *heavily* IMPDEF, despite the
standard format. Iterating over the list and disabling all is not
desirable as this might disable errors for components that do not have
an effect on the core that is powering down.
As such, leave this for the platform port to handle. Leave a note in the
porting guide so this is not missed.
Change-Id: I43c3f6f909fafc449d3b4e748b015b05338d9618
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
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