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| author | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-10-16 11:40:10 +0100 |
|---|---|---|
| committer | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-11-29 09:36:05 +0000 |
| commit | 0319a97747cc96af46220d22dea2ffe497e14b85 (patch) | |
| tree | c23854ebaa06d020c5707fe2808762e72de7441c /docs | |
| parent | 11a70d7e3ea58ebe183ba18319b87e2f089caf80 (diff) | |
| download | platform_external_arm-trusted-firmware-0319a97747cc96af46220d22dea2ffe497e14b85.tar.gz platform_external_arm-trusted-firmware-0319a97747cc96af46220d22dea2ffe497e14b85.tar.bz2 platform_external_arm-trusted-firmware-0319a97747cc96af46220d22dea2ffe497e14b85.zip | |
Implement support for the Activity Monitor Unit on Cortex A75
The Cortex A75 has 5 AMU counters. The first three counters are fixed
and the remaining two are programmable.
A new build option is introduced, `ENABLE_AMU`. When set, the fixed
counters will be enabled for use by lower ELs. The programmable
counters are currently disabled.
Change-Id: I4bd5208799bb9ed7d2596e8b0bfc87abbbe18740
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/user-guide.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/user-guide.rst b/docs/user-guide.rst index 95fa22e08..1b90f299b 100644 --- a/docs/user-guide.rst +++ b/docs/user-guide.rst @@ -321,6 +321,10 @@ Common build options payload. Please refer to the "Booting an EL3 payload" section for more details. +- ``ENABLE_AMU``: Boolean option to enable Activity Monitor Unit extensions. + Currently this option only applies for platforms that include a v8.2 processor + with AMU implemented. Default is 0. + - ``ENABLE_ASSERTIONS``: This option controls whether or not calls to ``assert()`` are compiled out. For debug builds, this option defaults to 1, and calls to ``assert()`` are left in place. For release builds, this option defaults to 0 |