SystemC Library and Application C++ Standard Version Conflict The core issue revolves around a mismatch between the C++ standard used to compile the SystemC library provided with ARM Fast Models v11.15 and the C++ standard used to compile the consumer application. The SystemC library in Fast Models v11.15 is compiled with C++11 support, while the…
CHI Protocol Data Packetization Rules and Bus Width Impact The ARM Coherent Hub Interface (CHI) protocol is a critical component in modern ARM-based SoCs, enabling efficient communication between agents in a coherent system. One of the key aspects of CHI is its data packetization mechanism, which determines how data is segmented and transmitted across the…
CHI Read Data Packet Handling in Device Memory Transactions In ARM’s Coherent Hub Interface (CHI) protocol, handling read data packets for Device Memory type transactions can present unique challenges, particularly when the returned data size does not match the expected transaction size. This issue arises because Device Memory transactions do not support byte-level enables for…
ARM CHI Protocol: Device Memory Type Transactions and Narrow Read Transfers The ARM Coherent Hub Interface (CHI) protocol is a critical component in modern ARM-based SoC designs, enabling efficient communication between various system components such as CPUs, GPUs, and memory controllers. One of the key features of CHI is its support for different memory types,…
AXI Slave Behavior with Illegal Write Strobes: Protocol Ambiguity and System Impact The Advanced eXtensible Interface (AXI) protocol, widely used in ARM-based SoCs, defines a robust framework for high-performance on-chip communication. However, the protocol does not explicitly mandate how an AXI slave should handle illegal write strobes (WSTRB). This ambiguity can lead to inconsistent behavior…
Cortex-M7 FVP MPS2 Simulation Running Faster Than Wall Clock Time The Cortex-M7 Fixed Virtual Platform (FVP) MPS2 simulation is designed to emulate the behavior of an ARM Cortex-M7 microcontroller in a virtual environment. One of the critical features of this simulation is the ability to control the simulation speed relative to real-world wall clock time….
ARMv-A Base RevC AEM FVP GIC Implementation Details The ARMv-A Base RevC AEM FVP (Fixed Virtual Platform) is a versatile simulation environment used for developing and testing ARM-based system-on-chip (SoC) designs. One of the critical components in any ARM-based SoC is the Generic Interrupt Controller (GIC), which manages interrupt handling across the system. The GIC…
FVP_MPS2_Cortex-M4 Simulator Crashes on CTRL-C Termination The FVP_MPS2_Cortex-M4 simulator is a critical tool for developing and testing ARM Cortex-M4 based systems. However, users often encounter issues when terminating the simulation using CTRL-C, leading to simulator crashes and error messages such as "Fatal: simulation not properly initialized: did you forget to call scx_initialize()?" This issue is…
ARM Cortex-A CPU, G31 GPU, V52 Video Processor, and D51 Display Controller Co-Design Complexity The integration of an ARM Cortex-A CPU, ARM Mali-G31 GPU, V52 Video Processor, and D51 Display Controller into a single System-on-Chip (SoC) presents a multifaceted challenge, particularly when targeting advanced display interfaces such as HDMI, MIPI-DSI, MIPI-CSI, and DVP. The primary…
Cortex-A7 Debug Requirements and DAP-LITE Capabilities The Cortex-A7 processor, a member of ARM’s Cortex-A family, is widely used in embedded systems due to its balance of performance and power efficiency. Debugging such a processor is a critical aspect of SoC development, and the Debug Access Port (DAP) is a key component in this process. The…