diff options
| author | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2017-12-13 10:54:37 +0000 |
|---|---|---|
| committer | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2018-01-11 12:27:27 +0000 |
| commit | 59902b7c4ca2413c2ee783da1bc66789e35868e5 (patch) | |
| tree | 41996e3ee54e00b237653169a37bb9552f507800 /lib/extensions | |
| parent | 7593252cee8745bbf1b05deb2f4a5f742d36c412 (diff) | |
AMU: Add plat interface to select which group 1 counters to enable
A new platform macro `PLAT_AMU_GROUP1_COUNTERS_MASK` controls which
group 1 counters should be enabled. The maximum number of group 1
counters supported by AMUv1 is 16 so the mask can be at most 0xffff.
If the platform does not define this mask, no group 1 counters are
enabled.
A related platform macro `PLAT_AMU_GROUP1_NR_COUNTERS` is used by
generic code to allocate an array to save and restore the counters on
CPU suspend.
Change-Id: I6d135badf4846292de931a43bb563077f42bb47b
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
Diffstat (limited to 'lib/extensions')
| -rw-r--r-- | lib/extensions/amu/aarch64/amu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/extensions/amu/aarch64/amu.c b/lib/extensions/amu/aarch64/amu.c index 007b3494..c00aa5a1 100644 --- a/lib/extensions/amu/aarch64/amu.c +++ b/lib/extensions/amu/aarch64/amu.c @@ -36,5 +36,7 @@ void amu_enable(int el2_unused) /* Enable group 0 counters */ write_amcntenset0_el0(AMU_GROUP0_COUNTERS_MASK); + /* Enable group 1 counters */ + write_amcntenset1_el0(AMU_GROUP1_COUNTERS_MASK); } } |