The ordering of memory transactions in Arm® AMBA® protocol is a significant requirement, i.e. the sequence of memory updates/accesses must follow a defined ordering as per the specification. Ordering is important for synchronization events by a processor with respect to retiring load/store instructions. AMBA ACE barrier transactions are used for maintaining the memory ordering across a system. The learning curve to understand barrier transactions may become a barrier to verify your design thoroughly. This blog provides insight, making it easier to understand and verify the barrier transactions. The blog will cover different types of barrier transactions, usage, and domain boundaries.
AMBA AXI exclusive access may look simple at first glance, but as we delve deeper into it, we find the different flavors of exclusive access. The possibility of these different scenarios and combinations poses a tough challenge in verifying the critical feature in AMBA-based designs. This blog primarily focusses on exclusive access in AMBA AXI3, the concept, its different flavors and how Synopsys VIP can be leveraged to overcome the corresponding verification challenges.
Verifying today’s complex designs is time consuming, as simulations run for long time and millions of transaction are executed. Traditional approach of debug is to dump all the information of millions of packets in a log file, however it would always be challenging to filter out specific transactions from the huge log file. For example, in case of AXI Protocol, a fixed number of outstanding transactions are allowed during simulation, it would always be difficult to find out such outstanding transaction in the huge log file of a single run of simulation or during interactive simulation. It is one of the biggest pain point of debugging.
The Design Automation Conference (DAC) 2016 was a great success and here we provide you the highlights of Synopsys’ activities at the event.
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Companies developing complex ARM-based SoC designs have to constantly keep up with evolving interface standards and proliferating protocols a recurring problem that is resource-intensive and time-consuming. Orchestrating these multiple protocols is critical to extracting maximum SoC performance a key competitive differentiator. Achieving high performance while ensuring correct protocol behavior is best addressed by a combination of transaction-based, protocol-aware verification and debug environments. Synopsys VIP coupled with the Verdi unified debug platform spans verification planning, simulation debug, coverage, HW-SW debug and emulation debug, and helps tackle this challenge end-to-end.