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Can we use same peripheral in secure and non secure world simultaneoulsy ?

Sahil

Hi,

Can we use a particular device in secure and non secure mode simultaneously without switching between modes?

Can it be done by by configuring/partitioning the address space of device ?

Thanks,

Sahil Malhotra

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  • +1 Arm Employee Badge in reply to Sahil

    depends on the design of the peripheral 

    if it has already multiple registers then there is nothing to configure in the peripheral since those different addresses are mapped by the security regions

    if the peripheral does not have distinct registers then it will most likely need to be configured in order to support this secure/non secure access

    if not, then you would need support in the driver to handle this secure non secure access

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  • +1 Arm Employee Badge in reply to Sahil

    depends on the design of the peripheral 

    if it has already multiple registers then there is nothing to configure in the peripheral since those different addresses are mapped by the security regions

    if the peripheral does not have distinct registers then it will most likely need to be configured in order to support this secure/non secure access

    if not, then you would need support in the driver to handle this secure non secure access

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