tree 6454c7cb6f2a76536e5d008ba82b293c6eada1d8
parent 593a132bb0f5ca560e07da8bc6c5e39a86413d03
author Alex Van Damme <atv@google.com> 1728336499 -0700
committer Alex Van Damme <atv@google.com> 1728930252 -0700

Make WFI actually stall the core until an interrupt

- Add top-level signals, `wfi` and `irq` -- `wfi` is an output signaling
  that the core is waiting for an interrupt to proceed, and `irq` is an
  input for said interrupt. Now when the WFI instruction is decoded, the
  pipeline will be halted and the `wfi` signal raised.
- In CoreAxi, the top level interrupt signal is `irqn`, and is inverted
  before being passed to Core.

Change-Id: I49bb6e2e4ed07e0579d36f37f86ede7b33377852