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Add support for PMP emulation #21

Merged
merged 2 commits into from
Mar 5, 2024
Merged

Add support for PMP emulation #21

merged 2 commits into from
Mar 5, 2024

Commits on Mar 5, 2024

  1. Add support for PMP virtualization 

    This commit adds support for PMP virtualization. Note that the lock bit is not
yet supported, thus PMPs are never enforced. The PMPs will need to be honoured
when we will add support for running the OS.
    @fesqvw @CharlyCst
    fesqvw authored and CharlyCst committed Mar 5, 2024
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  2. Add payload to test PMPs 

    This commit adds a test payload to exercise PMP emulation. For now QEMU exposes
only 16 PMPs, so Mirage can only expose 0 to the payload to stay spec-compliant
while keeping a few PMPs to protect itself.
The commit does include a test function for 16 exposed PMPs, we can enable it
later once more PMPs become available.

Co-authored-by: Abel Vexina Wilkinson <abel.vexinawilkinson@epfl.ch>
    @CharlyCst @fesqvw
    CharlyCst and fesqvw committed Mar 5, 2024
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