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Architectures and Processors forum How does ARM11 respond to a non-secure interrupt in secure mode?

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How does ARM11 respond to a non-secure interrupt in secure mode?

Dong Luo over 10 years ago

Note: This was originally posted on 19th March 2009 at http://forums.arm.com

Hi All,
Assuming that ARM11 is running a secure process and receives a non-secure IRQ or FIQ, how does ARM11 respond to a non-secure interrupt? What should hardware do? And, what should software do? How does ARM11 guarantee that data of secure world not expose to the non-secure interrupt? Can anybody clarify the above questions? Thanks.

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Peter Harris over 10 years ago +1 verified

Note: This was originally posted on 19th March 2009 at http://forums.arm.com It depends on the configuration of the Secure Configuration Register set by the Secure World code, and the status of the I...