Demystifying the Secure Enclave Processor
Lyj6k4
Lyj6k4
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<strong>Secure</strong> Mailbox<br />
• Actual mailbox implemented in<br />
AppleA7IOP.kext<br />
▫ Maps and abstracts I/O register operations<br />
• AppleA7IOP provides functions for posting and<br />
receiving messages<br />
▫ AppleA7IOP::postMailbox( … )<br />
▫ AppleA7IOP::getMailbox( … )<br />
• Implements a doorbell mechanism<br />
▫ Enables drivers to register callback handler