Abstract:

A PowerPC based secure SoC architecture is proposed to defend software attacks by hardware isolation.If the hardware and software resources can be isolated to secure and nonsecure resources and all the access requests are controlled by specific hardware design, the software level will get a better safeguard.Based on this idea,a secure extension to the PowerPC based SoC architecture is proposed,which builds the secure and nonsecure runtime environment for software applications.According to the current runtime environment and security status,the permit of any access request is judged.In addition,the highlevel model based on QEMU and SystemC for the proposed secure SoC is completed to verify that it can indeed protect the security of data.

Key words: secure SoC;PowerPC;software attack;hardware isolation architecture;secured execution environment