PCIe interface
Programming the firmware for a PCIe client interface on the Intel Arria 10 SoC involves a structured design flow that encompasses low-level hardware initialization, configuration of the PCIe interface, and the establishment of communication protocols between the SoC and the host system. This process requires an in-depth understanding of the Arria 10 SoC's architecture, including its PCIe hard IP blocks, ARM processors, and the Quartus Prime development environment. Below is a detailed firmware programming design flow, highlighting key steps and low-level interface details. ### 1. Hardware Initialization - **Power-On Reset Configuration**: Upon power-up, the Arria 10 SoC undergoes a reset sequence. Firmware needs to correctly configure the system's initial state, setting up clock sources, power management, and device modes for optimal operation. - **Clock and Reset Management**: The ARM processors and PCIe hard IP blocks within the Arria 10 SoC require specific clock configurat