- Clarify the documentation of the 'FWU_SMC_IMAGE_COPY' SMC in the
Firmware Update guide. Also extend the list of pre-conditions to
include the additional input validation implemented by previous
patches.
- Improve documentation of bl1_plat_mem_check() in the porting
guide. It now specifies that the generic FWU code protects
bl1_plat_mem_check() from integer overflows resulting from
the addition of the base address and size passed in arguments.
Change-Id: I07b47a3778df7b9c089529b2dd2135707640a91c
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
This patch adds design documentation for the Firmware Update (FWU)
feature in `firmware-update.md`. It provides an overview of FWU,
describes the BL1 SMC interface, and includes diagrams showing
an example FWU boot flow and the FWU state machine.
This patch also updates the existing TF documents where needed:
* `porting-guide.md`
* `user-guide.md`
* `firmware-design.md`
* `rt-svc-writers-guide.md`
* `trusted_board_boot.md`
Change-Id: Ie6de31544429b18f01327bd763175e218299a4ce
Co-Authored-By: Dan Handley <dan.handley@arm.com>
Sandrine Bailleux
Yatharth Kochar