METHOD FOR MANAGING THE ISOLATION OF RESOURCES OF A SYSTEM-ON-CHIP, AND CORRESPONDING SYSTEM-ON-CHIP

    公开(公告)号:US20240176689A1

    公开(公告)日:2024-05-30

    申请号:US18514812

    申请日:2023-11-20

    Inventor: Loic Pallardy

    CPC classification number: G06F11/0772 G06F11/0745

    Abstract: The system-on-chip includes at least one master device, at least one slave resource, an interconnection bus including an error notification channel, and a resource isolation system including, for each resource, a protection circuit configured to block or transmit transactions addressed to the resource via the interconnection bus, according to access rights of the resource and the transaction. The protection circuit is capable of generating a notification signal on the error notification channel of the interconnection bus in case of blockage of a transaction.

    Dynamic management of a memory firewall

    公开(公告)号:US12159043B2

    公开(公告)日:2024-12-03

    申请号:US17989389

    申请日:2022-11-17

    Abstract: In embodiments, a system includes a first and a second processing unit, a memory, and a firewall device. The first processing unit operates in a secure mode and generates memory access requests having a secure level. The second processing unit operates in a non-secure mode and generates memory access requests having a non-secure level. The memory includes a first memory area that can be shared between the first and second processing units. The firewall device includes a first firewall circuit with a first configuration authorizing access to the first memory area in the presence of a secure or non-secure level access request. The firewall circuit includes a second configuration prohibiting access to the first memory area in the presence of a secure level access request and authorizing access to the first memory area only in the presence of a non-secure level access request.

Patent Agency Ranking