Add debug unlock procedures in rom #1851
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I left writing the unit test for production for some later time. I understood the emulator for the Dma engine wrong (it does not operate on the root bus) and it needs to have a completely separate 64bit bus for AXI. |
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drivers/src/sha2_512_384.rs
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| /// Trait for SHA-2 digest operations | ||
| pub trait Sha2DigestOpTrait<'a, V: Sha2Variant>: Sized { |
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I'm not 100% sure why we need this trait. Why not implement this method directly on the generic struct, and not have to boomerang back and forth through the OpTrait and the Op?
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update and finalize are very similar. Using a trait with generics reduced the amount of code a bit.
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I think I understood your feedback and I removed that Sha2Variant trait.
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Please add PR description always |
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Done |
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This is now rebased on top of #1878 to make the unit tests pass as those require Axi DMA to work |
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Signed-off-by: Arthur Heymans <[email protected]>
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This adds both the manufactoring and production debug unlock codepaths. There are a few details that need to be resolved in TODOs that are unclear from the documentation. Signed-off-by: Arthur Heymans <[email protected]>
- production fuses on MCI - service req and resp regs Signed-off-by: Arthur Heymans <[email protected]>
Signed-off-by: Arthur Heymans <[email protected]>
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TODO: investigate use of sha_acc & fix inverted MLDSA |
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This implements the debug unlock flow for both manufactoring and production flows, according to "https://github.com/chipsalliance/caliptra-sw/blob/main-2.x/rom/dev/README.md"
This requires Sha512 ops so those are also added alongside Sha384.