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ARM architecture allows for different memory types (normal/device memory), shareability and accessibility domains.
When configuring a region, it is possible to tell the MPU access attributes. Currently for Cortex-{M3, M4} we default to Strongly Ordered, Shareable, which might not be appropriate for all MCUs.
ARM architecture allows for different memory types (normal/device memory), shareability and accessibility domains.
When configuring a region, it is possible to tell the MPU access attributes. Currently for Cortex-{M3, M4} we default to Strongly Ordered, Shareable, which might not be appropriate for all MCUs.
Details for MPU access attributes can be found in Section 4.5.6 and 4.5.9 of Cortex M4 Devices Generic User Guide
In the MPU trait, we might want to provide a way to specify memory attributes when allocating and updating memory regions.
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