PROGRAMMABLE DIRECT MEMORY ACCESS CHANNELS

摘要

A storage location of a device that can be configured to act as a master in a particular security mode, such as a Direct Memory Access (DMA) having one or more channels, can be programmed to indicate a security indicator to be provided when configured to operate as a master device.

主权项

1. A method comprising:
providing, from a first data processor core to an interconnect, first configuration information to be stored at a first DMA channel of a direct memory access (DMA) controller, the first configuration information including security information that corresponds to a first security mode of the first data processor core, wherein memory accesses of the first data processor core are qualified based upon security information of the first configuration information; providing a first access request from the first DMA channel to the interconnect that includes an address and the security information of the provided first configuration information; and qualifying the first access request of the first DMA channel based upon the security information, corresponding to the first security mode, of the first access request provided by the first DMA channel.