Jayanth Dodderi Chidanand 40e5f7a58f feat(context-mgmt): introduce EL3/root context ... * This patch adds root context procedure to restore/configure the registers, which are of importance during EL3 execution. * EL3/Root context is a simple restore operation that overwrites the following bits: (MDCR_EL3.SDD, SCR_EL3.{EA, SIF}, PMCR_EL0.DP PSTATE.DIT) while the execution is in EL3. * It ensures EL3 world maintains its own settings distinct from other worlds (NS/Realm/SWd). With this in place, the EL3 system register settings is no longer influenced by settings of incoming worlds. This allows the EL3/Root world to access features for its own execution at EL3 (eg: Pauth). * It should be invoked at cold and warm boot entry paths and also at all the possible exception handlers routing to EL3 at runtime. Cold and warm boot paths are handled by including setup_el3_context function in "el3_entrypoint_common" macro, which gets invoked in both the entry paths. * At runtime, el3_context is setup at the stage, while we get prepared to enter into EL3 via "prepare_el3_entry" routine. Change-Id: I5c090978c54a53bc1c119d1bc5fa77cd8813cdc2 Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>		2024-10-15 13:25:58 +01:00
..
bl31_entrypoint.S	fix(bl31): avoid clearing of argument registers in RESET_TO_BL31 case	2023-03-09 13:51:35 +00:00
crash_reporting.S	refactor(aarch64): remove weak links to el3_panic	2023-02-21 17:26:01 +00:00
ea_delegate.S	fix(el3-runtime): restrict lower el EA handlers in FFH mode	2023-11-01 17:46:46 +00:00
runtime_exceptions.S	feat(context-mgmt): introduce EL3/root context	2024-10-15 13:25:58 +01:00