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Apple Silicon Subsystems

These pages detail the specifics of a particular platform subsystem. They are loosely categorised by function.

Generalised overviews

Coprocessors and accelerators

  • HW:AGX - Apple’s PowerVR-derived tile-based deferred renderer
  • HW:SEP - The Secure Enclave, Apple’s crypto/biometrics/security engine

Platform control logic

  • HW:AIC - Apple Interrupt Controller
  • HW:WDT - Watchdog Timer
  • HW:SMC - System Management Controller
  • HW:ASC - Apple’s Mailbox-like firmware interface

Platform initialisation and boot

Application processors

I/O

Peripherals