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fix(mpam): refine MPAM initialization and enablement process

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Restricts MPAM to only NS world and enables trap to EL3 for access of
MPAM registers from lower ELs of Secure and Realm world.

This patch removes MPAM enablement from global context and adds it to
EL3 State context which enables/disables MPAM during world switches.
Renamed ENABLE_MPAM_FOR_LOWER_ELS to ENABLE_FEAT_MPAM and
removed mpam_init_el3() as RESET behaviour is trapping.

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I131f9dba5df236a71959b2d425ee11af7f3c38c4
This commit is contained in:
Arvind Ram Prakash 2023-10-11 12:10:56 -05:00
parent 4a2ff22fd4
commit edebefbcbc
14 changed files with 87 additions and 22 deletions
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2
common/feat_detect.c
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@ -169,7 +169,7 @@ void detect_arch_features(void)
check_feature(ENABLE_FEAT_DIT, read_feat_dit_id_field(), "DIT", 1, 1);
check_feature(ENABLE_FEAT_AMU, read_feat_amu_id_field(),
"AMUv1", 1, 2);
check_feature(ENABLE_MPAM_FOR_LOWER_ELS, read_feat_mpam_version(),
check_feature(ENABLE_FEAT_MPAM, read_feat_mpam_version(),
"MPAM", 1, 17);
check_feature(CTX_INCLUDE_NEVE_REGS, read_feat_nv_id_field(),
"NV2", 2, 2);