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Add vCLIC support #55

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Add vCLIC support #55

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@ezelioli ezelioli commented Jul 3, 2024

This PR adds support for the custom vCLIC extension.

It is a replacement of the previous PR, with only changes strictly relevant to vCLIC. It also makes the extension parametrized on an additional RVVCLIC parameter, which depends on RVH and RVSCLIC parameters and can be used to enable / disable the virtualization extension support.

The main changes are:

  1. CSRs: Implemented HGEIE write logic and functionality. Added vCLIC-specific VSTVT and VSINTTHRESH registers.
  2. CLIC interface: Adapted core interface and CLIC controller logic to vCLIC.

@ezelioli ezelioli requested a review from niwis as a code owner July 3, 2024 08:27
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