commit 17daef62c4a039f9dd4d64e8f9c00a0e4e4aa6b4
author Jamin Lin <jamin_lin@aspeedtech.com> Fri Jan 02 11:35:17 2026 +0800
committer Jamin Lin <jamin_lin@aspeedtech.com> Fri Jan 02 11:44:39 2026 +0800
tree 477cb06d4854198f626ccea3320abf04b3fe9063
parent 70a2d243a8478c368d5a92c6bfb324d03aa81bcf

ast27x0: Add Caliptra Manifest boot support and MCU runtime loader framework

Add initial support for Caliptra Manifest based boot flow on AST2700
and introduce a generic MCU runtime image loader framework.

This change adds full parsing, verification, and loading support for
Caliptra flash images, including manifest header handling, checksum
verification, image table parsing, and SoC manifest processing. A new
boot policy is implemented to prefer Caliptra Manifest boot and fall
back to legacy FIT boot on failure.

Key components introduced in this change:

- Add Caliptra Manifest data structures, image metadata, and helper APIs
(manifest.c, manifest_image.c, manifest.h).
- Introduce ast_loader and stor modules to abstract image lookup and
loading from manifest storage into destination memory.
- Add board-specific manifest boot handling for AST2700, including
BL31, U-Boot, SSP, and TSP image post-processing and release flow.
- Support MCU runtime firmware loading for AST2700 A1/A2 platforms.
- Support SPL and appended DTB discovery for both Caliptra and FIT paths.
- Enable SSP boot flow and chained TSP boot when corresponding firmware
images are present.
- Refactor platform constants into platform_ast2700.h and clean up
address handling and reserved memory parsing.

The implementation is aligned with the MCU runtime design used in the
Zephyr-based reference implementation:
https://github.com/AspeedTech-BMC/aspeed-zephyr-project/tree/aspeed-master/apps/mcu-runtime

This commit establishes the foundation for Caliptra-based boot while
maintaining backward compatibility with existing FIT-based boot
flows.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>