KMAC DV - Chip-level cross-IP tests (entropy-to-KMAC, ROM KMAC-app)

Chip-level cross-IP integration paths involving KMAC (TOP_CROSS_IP_PATHS, chip V2). Placeholders registered.

Testpoints:

• chip_entropy_src_kmac (entropy_src_kmac_test / entropy_src_kmac_test_cheri): SW enables KMAC entropy masking and requests a masked SHA3-256 operation; with the entropy source active, KMAC completes in masked mode and produces the correct digest, confirming the entropy-source-to-KMAC internal routing.
• chip_kmac_rom_app (kmac_rom_app_test): monitor the KMAC application interface during the ROM integrity check at boot, confirming the ROM controller drives the app request, KMAC computes the digest, and the pass/fail result fed back to rom_ctrl matches expectation.

Note: chip_kmac_rom_app is implicitly exercised on every successful V1 boot (the ROM integrity check uses KMAC), so this testpoint adds explicit monitoring of that path.

Start at the TOP_CROSS_IP_PATHS chip V2 testpoint registrations and locate entropy_src_kmac_test, entropy_src_kmac_test_cheri, and kmac_rom_app_test. Read the existing entropy-source and ROM-integrity test flows first. Done means both paths are explicitly monitored: masked SHA3-256 produces the expected digest, and the ROM KMAC result fed to rom_ctrl matches the expected pass/fail outcome.