Hi Simon, Tom,
Add to the FF-A bus FFA_MEM_SHARE and FFA_MEM_RECLAIM ABIs.
These FF-A ABIs are for memory management. They are used for sharing memory between U-Boot and secure world.
FFA_MEM_SHARE starts a transaction to grant access to a memory region to one or more Borrowers (aka Secure Partitions or endpoints). FFA_MEM_RECLAIM restores exclusive access to a memory region back to its Owner (U-Boot).
For more details about these ABIs please refer to the FF-A v1.0 specification [1]. For more details about FF-A in U-Boot please refer to the readme [2].
This work is based on the implementation in Linux kernel [3].
This work is provided with sandbox support (emulation and test cases).
[3]: commit cc2195fe536c28e192df5d07e6dd277af36814b4 Files: drivers/firmware/arm_ffa/driver.c , include/linux/arm_ffa.h
Cc: Tom Rini trini@konsulko.com Cc: Simon Glass sjg@chromium.org Cc: Ilias Apalodimas ilias.apalodimas@linaro.org Cc: Jens Wiklander jens.wiklander@linaro.org Cc: Achin Gupta achin.gupta@arm.com Cc: Drew Reed Drew.Reed@arm.com Cc: Hugues Kamba Mpiana Hugues.KambaMpiana@arm.com
Cheers, Abdellatif
Abdellatif El Khlifi (8): arm_ffa: Add NULL pointer check to the driver operations arm_ffa: Add FFA_MEM_SHARE support arm_ffa: Add FFA_MEM_RECLAIM support arm_ffa: sandbox: Replace the emulator error log with debug log arm_ffa: sandbox: Add FFA_MEM_SHARE emulation arm_ffa: sandbox: Add FFA_MEM_SHARE tests arm_ffa: sandbox: Add FFA_MEM_RECLAIM emulation arm_ffa: sandbox: Add FFA_MEM_RECLAIM tests
A gentle reminder please. Your comments are welcome.
Cheers, Abdellatif