Replace the current DebugFS and custom ioctl based FF-A user-space
interface with an implementation which uses the TEE subsystem.
Currently the new TEE driver supports Trusted Services specific
protocol and enables communication with PSA Secure Partitions. The
design allows extending the TEE driver with other protocols in the
future when demand arises.

The main intention of the change is to break away from the
proof-of-concept nature of the previous implementation, coming from
the debug nature of DebugFS (it is disabled in release builds), and
the foreseeable challenges of up-streaming a new user-space API.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: If2a59d5ca15eebeb30dad229fb99207aadc13d93

Jelle Sels authored Oct 14, 2021 and Balint Dobszay committed Aug 31, 2022

During probing, the FF-A device was always set to 32bit even while
running on a 64bit OS. Change this by only setting the device to
32bit if we are running a 32bit system.

Signed-off-by: Jelle Sels <jelle.sels@arm.com>

Pass the required memory region size as an argument, instead of using
hardcoded value.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: Id7d1ee7f87ea635603800978666b64da975997f9

Imre Kis authored May 18, 2021 and Balint Dobszay committed Aug 31, 2022

Shared memory regions are referenced by the memory handle instead of
the destination ID.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: Id10ba15322a62bbda3694c007ba6fb63ca7f693a

This module is a generic test component, which doesn't contain any
specific code for a specific SP. Therefore having the compatible SP
UUIDs hardcoded is a drawback. This commit enables defining the UUIDs
(which can be bound to this driver) when loading the module. Example:

insmod arm-ffa-user.ko uuid_str_list=\
"d9df52d5-16a2-4bb2-9aa4-d26d3b84e8c0",\
"dc1eef48-b17a-4ccf-ac8b-dfcff7711b14"

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I5861ac2c1d8f1d8c6704b1abb3a44391d4834568

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: Ie397323ec83babb0d7c5d6db455ea9b855c1fd5d

This contains non backwards compatible changes to the user space API,
therefore the module version major number is increased.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: Ieb899ed754a8b4ca31720746f1b287bce617418b

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I7b54b0068f39b181feac7cd58c644493f2e65582

The FF-A driver operations are currently not accessible from user
space. This commit adds a thin layer using a DebugFS interface to
expose them. It is a temporary workaround for the OP-TEE team,
prototyping S-EL0 Secure Partitions and OP-TEE as S-EL1 SPMC.

Change-Id: Ic15a3acf07d74139b37af4aee3a69de634056ba6
Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>

Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>