Any error event can be mapped to the
critical-priority interrupt. A high-priority error interrupt is generated when an
event is enabled to cause an interrupt (using the Error Group N Critical
Priority Interrupt Influence Set Register) and the raw status is set (using the
Error Group N Event Raw Status/Set Register).
When a critical-priority error
interrupt occurs, the following steps must be performed by acting processor:
- Read the Info Register to
confirm that the critical-priority error output triggered.
- Read the Error Group N
Critical Priority Interrupt Influence Set Register and the raw status in the
Error Group N Event Raw Status/Set Register to determine the input
error events that triggered the critical-priority error interrupt.
- Perform Global Soft Reset to
clear the Info Register (Base Address + 0x04) critical-priority error
interrupt status bit as well as all raw interrupt status.
- If the critical-priority
error interrupt resulted in an ESM Warm Reset, re-enable the Global Enable
Register.