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Clint interrupts virtualization #199

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wants to merge 4 commits into from
Closed

Clint interrupts virtualization #199

wants to merge 4 commits into from

Commits on Sep 30, 2024

  1. This commit adds m-mode interrupts tests 

    To verify correctness of interrupt virtualization, we should test some corner cases that are not currently addressed by firmware payloads
This tests verify that for virtualized m-mode interrupts from CLINT (timer&software) priority is right (e.g if two interrupts are pending simultaniously, MSI will be delivered before MTI), interrupt will be raised again if not cleared in trap handler, and that MSIs work overall (albeit that should already be covered by zephyr)
    @Wesdcv
    Wesdcv committed Sep 30, 2024
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  2. This is a first draft commit with virtualized interrupts MSI and MTI 

    Works in CI, doesn't work on the board
    @Wesdcv
    Wesdcv committed Sep 30, 2024
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  3. Refactored interrupt virtialization tests 

    Added timer tests to CI
Tidied up the code a bit
    @Wesdcv
    Wesdcv committed Sep 30, 2024
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  4. Fix timer virtualization bugs 

    This commit resolves two issues with timer virtualization:
1. Fixed a timer delay that was too large, ensuring test success regardless of log level.
2. Corrected a bug where the MPIE value was being overwritten, which for some reason affected only Spike.
Additionally, now firmware cannot delegate MSI and MTI.
    @Wesdcv
    Wesdcv committed Sep 30, 2024
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