dev(val): add ACS SMC secure timer support and TF-A integration - #544
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shanmugapriyal03
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Sep 18, 2026
shanmugapriyal03
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- Add VAL wrapper and ACS EL3 SMC services for secure timer operations
- Add system counter frequency read and CNTHPS/CNTHVS PPI discovery
- Add EL3 timer helpers and secure timer interrupt information
- Add G017 secure physical timer PPI mapping test
- Add T010 and T011 system counter minimum frequency tests
- Add TF-A build support for ACS EL3 SMC services
- Add VAL wrapper for ACS EL3 SMC service calls. - Define ACS SMC handler FID and service selectors. - Add EL3 timer helpers for CNTID, CNTPCT, CNTPS program, and CNTPS disable. - Extend timer info tables with secure timer interrupt fields. - Add G017 test for secure physical timer CNTPS PPI mapping. - Add T010 and T011 tests to check system counter GT minimum freq - Wire G017 into BSA/UEFI builds and rule metadata. - Skip G017 when EL1 CNTPCT skip-trap policy is enabled. Signed-off-by: Srikar Josyula <srikar.josyula@arm.com> Co-authored-by: Shanmuga Priya L <shanmuga.priyal@arm.com> Co-authored-by: Riddhi Kabra <RiddhiKabra@arm.com> Change-Id: Ia567561a2ea4e35c9f845200a4e6b74e72c7a30a
- Add ACS EL3 SMC handler implementation - Introduce SMC services to read the system counter frequency and - discover CNTHPS/CNTHVS timer PPIs - Add build script to integrate ACS EL3 sources into TF-A and build BL31 - Support automatic RD-V3 BL31 packaging and stack repackaging after a successful build Signed-off-by: Shanmuga Priya L <shanmuga.priyal@arm.com> Change-Id: Ie8f5c53309cfb432df3b887ce6de89ca881299e1
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