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Driver definitions which are used by kernel/core in base-hw, and also by other drivers (e.g. from the os repository) have to reside in the generic base-repository, for instance some uart drivers. All drivers which are interesting for one of the sites only (sp804 for timer driver, or cortex_a9 cpu driver for base-hw) should reside in the respective repos. Factorize cpu context out of Cortex A9 specific definitions. Moreover, there is already a Cpu_state object containing all common ARM registers. We use this as a base for the cpu context switching done by the base-hw kernel. The Cpu_state class get extended by a cpu-exception field, that stores the kind of exception raised when the corresponding context got interrupted. This information is used not only by the base-hw kernel, but also by the TrustZone VMM that is build currently.
This directory contains include files of interfaces that are exported by components to be used by other components. Each subdirectory corresponds to the component exporting the interface.