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 (via the
Error Group N Critical Priority Interrupt Influence Set Register) and the raw
status is set (via the Error Group N Event Raw Status/Set Register).
When a critical priority error
interrupt occurs following steps must be performed by acting processor :
- Read the Info Register to confirm that the critical priority error output
triggered.
- Read Error Group N Critical Priority Interrupt Influence Set Register
and the raw status in Error Group N Event Raw Status/Set Register to
determine the input error events which 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.