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feat(sys_reg_trace): enable trace system registers access from lower NS ELs

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Introduced a build flag 'ENABLE_SYS_REG_TRACE_FOR_NS' to enable trace
system registers access in NS-EL2, or NS-EL1 (when NS-EL2 is
implemented but unused).

Change-Id: Idc1acede4186e101758cbf7bed5af7b634d7d18d
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
This commit is contained in:
Manish V Badarkhe 2021-06-29 11:44:20 +01:00
parent 2031d6166a
commit d4582d3088
11 changed files with 124 additions and 0 deletions
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5
docs/getting_started/build-options.rst
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@ -781,6 +781,11 @@ Common build options
feature for AArch64. The default is 0 and it is automatically disabled when
the target architecture is AArch32.
- ``ENABLE_SYS_REG_TRACE_FOR_NS``: Boolean option to enable trace system
registers access from NS ELs, NS-EL2 or NS-EL1 (when NS-EL2 is implemented
but unused). This feature is available if trace unit such as ETMv4.x, and
ETE(extending ETM feature) is implemented. This flag is disabled by default.
GICv3 driver options
--------------------