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Add support for protected MMIO SMs #10

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jovanbulck opened this issue Jun 28, 2017 · 2 comments
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Add support for protected MMIO SMs #10

jovanbulck opened this issue Jun 28, 2017 · 2 comments
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Tool chain should make it easier to create and securely link to asm SMs that gain exclusive access to a Memory Mapped I/O (MMIO) device.
@jovanbulck jovanbulck self-assigned this Jun 28, 2017
@jovanbulck jovanbulck mentioned this issue Jun 28, 2017
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@jovanbulck jovanbulck mentioned this issue Jul 12, 2017
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@jovanbulck
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Commit 03446cb implements compiler/linker support for DECLARE_ASM_SM modules.

For now, tool chain assumes exclusive ownership over the asm MMIO SM using a hard coded sancus_get_caller_id. Ideally, exclusive ownership should be optional -- to also allow for secure authentic != exclusive sensor readings.

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FIxed: as per 8d9b5e4 MMIO asm SMs can either be exclusive to a certain callerID, or not.

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