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Add PSA FWU support on U-Boot v2025.04
Introduce Platform Security Architecture (PSA) Firmware Update (FWU) support to
U-Boot v2025.04 on the Corstone-1000 reference design. This implements the
Arm DEN0118 v1.0A specification and provides a generic, upstreamable FWU
framework for reuse across other Arm platforms.
Design overview:
Client/Runner: U-Boot parses the capsule and executes the FWU state machine.
Update agent: Secure world handles flash writes and metadata updates.
Key features:
- Capsule-based firmware updates with support for multiple payloads
- On-disk capsule handling (ESP-based update)
- Optional image acceptance at ExitBootServices()
- ESRT (EFI System Resource Table) support
- FFA_MEM_SHARE and FFA_MEM_RECLAIM ABI support
- FWU enabled for the Corstone-1000 platform
[1]: Platform Security Firmware Update for the A-profile Arm Architecture,
https://developer.arm.com/documentation/den0118/latest/
Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
Signed-off-by: Harsimran Singh Tungal <harsimransingh.tungal@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>
See ../README.md