Disabling the Cryptographic Extension
To disable the Cryptographic Extension for each individual core, assert the corresponding bit of the CRYPTODISABLE input signal. This signal is only sampled during reset of the processor.
When CRYPTODISABLE is asserted:
- Executing a cryptographic instruction results in an undefined exception.
- The ID registers described in Table 2-1 Cryptographic Extension register summary indicate that the Cryptographic Extension is not implemented.