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- IOPMP: To allow domains to request access ownership of devices
- AIA/APLIC: Secure/Non-secure interrupt handling
- Secure boot: Integrate ZSBL & FSBL to verify the signature of images
- FF-A like ABI: Unified protocol used among Secure/Non-secure images (need to be standardised for RISC-V)
- SmMTT: Additional secure features e.g. memory isolation, assigning interrupts to domains, etc.
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