Djam/arm-trusted-firmware
1
0
Fork 0
mirror of https://github.com/ARM-software/arm-trusted-firmware.git synced 2025-04-08 05:43:53 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

feat(cpufeat): upgrade PMU to v8 (FEATURE_DETECTION)

Browse source 
The ARMv8 ARM J.a describes the ID_AA64DFR0_EL1.PMUver field as allowing
a maximum version number of 8 now. The added features extend the Common
event number space and clarify on some UNPREDICTABLE behaviour.

None of this affects TF-A or any system registers, so just increase the
maximum known version number to let the FEATURE_DETECTION test pass on
ARMv8.8 implementations.

Change-Id: Icab48630c1635bcd78a710b443f0db01b8ff7c9b
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Andre Przywara 2024-03-07 17:40:55 +00:00
parent 0567eca0b9
commit 515d2d46a3
2 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
common/feat_detect.c
View file

@ -289,7 +289,7 @@ void detect_arch_features(void)
* revisions so that we catch them as they come along
*/
check_feature(FEAT_STATE_ALWAYS, read_feat_pmuv3_id_field(),
"PMUv3", 1, ID_AA64DFR0_PMUVER_PMUV3P7);
"PMUv3", 1, ID_AA64DFR0_PMUVER_PMUV3P8);
/* v8.1 features */
check_feature(ENABLE_FEAT_PAN, read_feat_pan_id_field(), "PAN", 1, 3);

2
include/arch/aarch64/arch.h
View file

@ -238,7 +238,7 @@
#define ID_AA64DFR0_PMUVER_SHIFT U(8)
#define ID_AA64DFR0_PMUVER_MASK U(0xf)
#define ID_AA64DFR0_PMUVER_PMUV3 U(1)
#define ID_AA64DFR0_PMUVER_PMUV3P7 U(7)
#define ID_AA64DFR0_PMUVER_PMUV3P8 U(8)
#define ID_AA64DFR0_PMUVER_IMP_DEF U(0xf)
/* ID_AA64DFR0_EL1.SEBEP definitions */