Fortinet, Inc.

Zengli Duan

Xu Zhou

Ziyu Huang

Dengxue Yan

Responsive to OTP device not being enabled for an SoC, the RAMBOOT bootup authenticated by the key or key hash of an OTP is precluded and a determination is made whether the RAMBOOT bootup has been authenticated by the key or key hash on the virtual OTP. Responsive to not being authenticated, authentication of the RAMBOOT bootup is initiated. Responsive to being authenticated, enablement of the OTP device is initiated by burning an enable bit. Content of the virtual OTP is verified. The verified content can then be transferred from the virtual OTP to the OTP hardware module. Finally, authenticated RAMBOOT bootup is enabled from the OTP hardware module using the verified content prior to enablement of the OTP hardware module. ROMBOOT is read-only.

Virtual one-time programming (OTP) to avoid dead chip during OTP device programming

Methods and systems for implementing improved partitioning and virtualization in a multi-host environment are provided. According to one embodiment, multiple devices, including CPUs and peripherals, coupled with a system via an interconnect matrix/bus are associated with a shared memory logically partitioned into multiple domains. A first domain is associated with a first set of the devices and a second domain is associated with a second set of the devices. A single shared virtual map module (VMM), maps a memory access request to an appropriate partitioned domain of the memory to which the originating device has been assigned based on an identifier associated with the device and further based on they type of memory access. The VMM causes a memory controller to perform memory access on behalf of the device by outputting a physical address based on the identified domain and the virtual address specified by the request.

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San Jose, CA, United States of America

Zengli Duan