Hi Abdellatif,
On Mon, 1 Aug 2022 at 11:21, Abdellatif El Khlifi abdellatif.elkhlifi@arm.com wrote:
Add the driver implementing Arm Firmware Framework for Armv8-A v1.0
The Firmware Framework for Arm A-profile processors (FF-A) describes interfaces (ABIs) that standardize communication between the Secure World and Normal World leveraging TrustZone technology.
This driver uses 64-bit registers as per SMCCCv1.2 spec and comes on top of the SMCCC layer. The driver provides the FF-A ABIs needed for querying the FF-A framework from the secure world.
32-bit version of the ABIs is supported and 64-bit version of FFA_RXTX_MAP and FFA_MSG_SEND_DIRECT_{REQ, RESP}.
In u-boot FF-A design, FF-A is considered as a discoverable bus. The Secure World is considered as one entity to communicate with using the FF-A bus. FF-A communication is handled by one device and one instance (the bus). This FF-A driver takes care of all the interactions between Normal world and Secure World.
The driver exports its operations to be used by upper layers.
Exported operations:
- partition_info_get
- sync_send_receive
- rxtx_unmap
This implementation provides an optional feature to copy the driver data to EFI runtime area.
This is v2 but I don't see a change list?
Signed-off-by: Abdellatif El Khlifi abdellatif.elkhlifi@arm.com Cc: Tom Rini trini@konsulko.com Cc: Ilias Apalodimas ilias.apalodimas@linaro.org Cc: Jens Wiklander jens.wiklander@linaro.org
MAINTAINERS | 6 + common/board_r.c | 7 + drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/arm-ffa/Kconfig | 33 + drivers/arm-ffa/Makefile | 7 + drivers/arm-ffa/arm-ffa-uclass.c | 16 + drivers/arm-ffa/arm_ffa_prv.h | 219 ++++ drivers/arm-ffa/core.c | 1338 ++++++++++++++++++++ drivers/arm-ffa/efi_ffa_runtime_data_mgr.c | 94 ++ include/arm_ffa.h | 132 ++ include/dm/uclass-id.h | 1 + include/uuid.h | 8 + lib/efi_loader/efi_boottime.c | 17 + lib/uuid.c | 65 + 15 files changed, 1946 insertions(+) create mode 100644 drivers/arm-ffa/Kconfig create mode 100644 drivers/arm-ffa/Makefile create mode 100644 drivers/arm-ffa/arm-ffa-uclass.c create mode 100644 drivers/arm-ffa/arm_ffa_prv.h create mode 100644 drivers/arm-ffa/core.c create mode 100644 drivers/arm-ffa/efi_ffa_runtime_data_mgr.c create mode 100644 include/arm_ffa.h
I think this should be in an existing directory, or perhaps drivers/firmware.
Regards, Simon