System on chip firewall memory architecture

摘要

In the example described, the method of sending a message on a system-on-chip (SoC) (100) and SOC is a firewall block stored in a single continuous memory (108), an initiator-side firewall block (106) that uses a respective pointer to the memory. ) And the location of the receiver block memory. The address of the pointer in single memory depends on the unique firewall identifier of each firewall block (106, 108). An exclusive security configuration controller (116) provides a security bus (114) that is electrically separated from the system bus (104) used to send messages from the transmit function block (102) to the receive function block (102). Use pointers to configure firewall blocks through. The initiator-side firewall block adds a message identifier to the message that depends on the configuration settings of the initiator-side firewall block. The receiver-side firewall block controls the permission for the receiving functional block to access the message depending on the message identifier and the configuration settings of the receiver-side firewall block.