mirror of
https://github.com/genodelabs/genode.git
synced 2025-01-26 06:09:25 +00:00
379c6c1cd4
Within the central security unit of the i.MX53 SoC, one can set protection level of various DMA bus master requests, distinguishing them between normal, and secure access. Although, the access level was meant to be set correctly, the enumeration values that denoted the kind of access were incorrect. Thereby, until now every DMA requests was set as being secure. This commit corrects the enumeration values, and sets all DMA operations as being unsecure, accept from the graphical subsystem which is controlled by the secure world only. Thanks to Andrea Barisani and Andrej Rosano from Inverse Path for discovering this bug, as well as the hardware limitation!