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<ref name="TOPPERS SafeG">[http://www.wiki.xilinx.com/Multi-OS+Support+%28AMP+%26+Hypervisor%29#Asymmetric%20Multi%20Processing%20%28AMP%29%20Configurations-Open%20Source%20or%20Freely%20Available%20Solutions-TOPPERS%20SafeG%20%28Nagoya%20University%29 ''TOPPERS SafeG (Nagoya University)'']</ref>.
[[File:Safeg-arch-english.png|thumb|center|400px|Nagoya University TOPPERS SafeG architecture]]
As shown in the picture, the monitor can be viewed as a software layer that lies between W1Trust/W2 Non-trust worlds and underlying hardware. The monitor is responsible for:
* enabling and initializing TrustZone in order to protect memory regions that must not be accessible by Non-secure world
* TBD
About operating systems, linux Linux has been chosen for Non-trust world, while [http://www.freertos.org FreeRTOS ] has been selected for the Trust world. At the time of this design, the Linux/FreeRTOS combination has proven to be the most appealing for the majority of applications that this solution addresses. Nevertheless different combinations are possible{{efn|For example TOPPERS project makes use of [http://www.toppers.jp/en/index.html different RTOSes].}}.
About the multi-processing scheme, AMP has been used{{efn|The monitor can support either AMP or SMP configurations.}}.