tree 0d9e1539626ea6d1be950fd746f272e0d3ee01cb
parent f356f7e45af7da9cb896b3dc3523135526667e26
author Manish V Badarkhe <Manish.Badarkhe@arm.com> 1626571587 +0100
committer Manish V Badarkhe <Manish.Badarkhe@arm.com> 1629966591 +0100

feat(trf): initialize trap settings of trace filter control registers access

Trap bits of trace filter control registers access are in
architecturally UNKNOWN state at boot hence

1. Initialized trap bits to one to prohibit trace filter control
   registers accesses in lower ELs (EL2, EL1) in all security states
   when FEAT_TRF is implemented.
2. These bits are RES0 when FEAT_TRF is not implemented and hence set
   it to zero to aligns with the Arm ARM reference recommendation,
   that mentions software must writes RES0 bits with all 0s.

Change-Id: I1b7abf2170ece84ee585c91cda32d22b25c0fc34
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>