Clear the MHU message buffer to remove assets from memory.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I730e7b044eaf0bf517532a12146e4f542949544e
Platform must define the maximum size of the message
over MHU.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I91a6c132c946f4465178910b8ea83544f562e837
Adding PLAT_* prefix to indicate that the
platform needs to provide this definition.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I0bd02be405fd8b1e625bd2b82647ebb2b58265fc
Remove an assert, which checks whether output buffer is
provided, because in measured boot there is no output.
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I08db9c2eea1da2d7120c9872ffbf8d8ee45c8e08
Provide a new makefile as a convenience for platform makefiles to pull
in the list of source files and headers for the RSS communication
driver.
Change-Id: I188a1a8f4e77318cdc87c3155b280090c46ce813
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
The current comms protocol (where arguments and return data is embedded
into the MHU message) is now protocol v0. Protocol v1 embeds pointers
into the message, and has the RSS retrieve the data via DMA.
Change-Id: I08d7f09c4eaea673769fde9eee194447a99f1b78
Signed-off-by: Raef Coles <raef.coles@arm.com>
This commit adds a driver to conduct the AP's communication
with the Runtime Security Subsystem (RSS).
RSS is Arm's reference implementation for the CCA HES [1].
It can be considered as a secure enclave to which, for example,
certain services can be offloaded such as initial attestation.
RSS comms driver:
- Relies on MHU v2.x communication IP, using a generic MHU API,
- Exposes the psa_call(..) API to the upper layers.
[1] https://developer.arm.com/documentation/DEN0096/latest
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Signed-off-by: David Vincze <david.vincze@arm.com>
Change-Id: Ib174ac7d1858834006bbaf8aad0eb31e3a3ad107
