32 lines
876 B
Plaintext
32 lines
876 B
Plaintext
* ARMv8.2 RAS Driver
|
|
==============================
|
|
|
|
RAS are three aspects of the dependability of a system:
|
|
Reliability: continuity of correct service
|
|
Availability: readiness for correct service
|
|
Serviceability: ability to undergo modifications and repairs
|
|
|
|
ARMv8.2 provides RAS extensions to achieve the above features in a system.
|
|
|
|
arm64_ras driver allows you to handle Correctable errors using
|
|
Fault Handling Interrupt (or FHI).
|
|
|
|
The driver provides an API for CPU sepcific RAS drivers to
|
|
register callbacks in case of FHI. When FHI occurs, the FHI
|
|
ISR goes through the list of registered callbacks and executes
|
|
them.
|
|
|
|
Required Properties:
|
|
|
|
- compatible : Should be "arm,armv8.2-ras"
|
|
- interrupts : Represents the Fault Handling Interrupt
|
|
|
|
Example:
|
|
=========
|
|
|
|
arm64_ras: arm64_ras {
|
|
compatible = "arm,armv8.2ras";
|
|
interrupts = <0 400 0x04>;
|
|
status = "disabled";
|
|
};
|