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Merge "build(amu): restrict counters (RAZ)" into integration

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Manish V Badarkhe 2024-07-29 18:55:03 +02:00 • committed by TrustedFirmware Code Review
commit 93b7b752e9
2 changed files with 4 additions and 3 deletions
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5
docs/getting_started/build-options.rst
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@ -23,8 +23,9 @@ Common build options
is expected to contain a makefile called ``<aarch32_sp-value>.mk``.
- ``AMU_RESTRICT_COUNTERS``: Register reads to the group 1 counters will return
zero at all but the highest implemented exception level. Reads from the
memory mapped view are unaffected by this control.
zero at all but the highest implemented exception level. External
memory-mapped debug accesses are unaffected by this control.
The default value is 1 for all platforms.
- ``ARCH`` : Choose the target build architecture for TF-A. It can take either
``aarch64`` or ``aarch32`` as values. By default, it is defined to

2
make_helpers/arch_features.mk
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@ -280,7 +280,7 @@ endif
ENABLE_FEAT_AMU ?= 0
ENABLE_AMU_AUXILIARY_COUNTERS ?= 0
ENABLE_AMU_FCONF ?= 0
AMU_RESTRICT_COUNTERS ?= 0
AMU_RESTRICT_COUNTERS ?= 1
# Build option to enable MPAM for lower ELs.
# Enabling it by default