[aes] Upstream support for GCM - Part 22#29276
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vogelpi merged 1 commit intolowRISC:masterfrom Feb 6, 2026
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When using .set() method of the uvm_reg_field base class (this only updates the desired value in the abstraction class) followed by a csr_update() call (this updates the DUT in case the desired value doesn't match the mirrored value), we also need to explicitly update the mirrored value. This can happen either by using the .predict() method, or by calling csr_rd() or csr_wr(). This commit adds missing calls to the .predict() method were required. Without these calls, the mirrored values can get out of sync and since in some cases we use the mirrored value to decide whether we need to update register values, the DUT and the DV environment can get out of sync. Signed-off-by: Pirmin Vogel <vogelpi@lowrisc.org>
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Feb 6, 2026
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This is the 22nd PR of a series of PRs to upstream support for AES-GCM. The original PR can be found here: vogelpi#30
[aes/dv] Add missing predict() calls to update mirrored RAL values
When using .set() method of the uvm_reg_field base class (this only updates the desired value in the abstraction class) followed by a csr_update() call (this updates the DUT in case the desired value doesn't match the mirrored value), we also need to explicitly update the mirrored value. This can happen either by using the .predict() method, or by calling csr_rd() or csr_wr(). This commit adds missing calls to the .predict() method were required.
Without these calls, the mirrored values can get out of sync and since in some cases we use the mirrored value to decide whether we need to update register values, the DUT and the DV environment can get out of sync.