AMBA-PV offers two functions based on the TLM 2.0 base protocol
to generate debug accesses:
debug_read(…)
debug_write(…).
There is important limitation if such debug transactions are
initiated from a SystemC master port to an EVS slave port such as
shown in Figure 5.22.
Debug transactions from a SystemC component (for Figure 5.22, DMA) can access debug_read() and debug_write() functions
on the respective bus bridge (ARMBAPV2PVBus). However,
the transactions that are generated on the bus connection are only
standard non-debug transactions. Because the attached component
can not distinguish between a non-debug and a debug transaction,
it is assumed to be a normal transaction.
This limitation will be removed in a future release.
Note
Debug accesses that are initiated by a master port in the
EVS are correctly translated to debug accesses in the AMBAPV bridge
(PVBus2AMBAPV).
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